diff --git a/db/db185/db185.c b/db/db185/db185.c
index 58d2fe596..cfdd3b855 100644
--- a/db/db185/db185.c
+++ b/db/db185/db185.c
@@ -227,7 +227,7 @@ __db185_open(file, oflags, mode, type, openinfo)
 	dbp->api_internal = db185p;
 
 	/* Open the database. */
-	if ((ret = dbp->open(dbp, NULL,
+	if ((ret = (dbp->open)(dbp, NULL,
 	    file, NULL, type, __db_oflags(oflags), mode)) != 0)
 		goto err;
 
diff --git a/db/db_archive/db_archive.c b/db/db_archive/db_archive.c
index 3460ed3a4..c2901a015 100644
--- a/db/db_archive/db_archive.c
+++ b/db/db_archive/db_archive.c
@@ -119,9 +119,9 @@ main(argc, argv)
 	 * If attaching to a pre-existing environment fails, create a
 	 * private one and try again.
 	 */
-	if ((ret = dbenv->open(dbenv, home, DB_USE_ENVIRON, 0)) != 0 &&
+	if ((ret = (dbenv->open)(dbenv, home, DB_USE_ENVIRON, 0)) != 0 &&
 	    (ret == DB_VERSION_MISMATCH ||
-	    (ret = dbenv->open(dbenv, home, DB_CREATE |
+	    (ret = (dbenv->open)(dbenv, home, DB_CREATE |
 	    DB_INIT_LOG | DB_PRIVATE | DB_USE_ENVIRON, 0)) != 0)) {
 		dbenv->err(dbenv, ret, "DB_ENV->open");
 		goto shutdown;
diff --git a/db/db_checkpoint/db_checkpoint.c b/db/db_checkpoint/db_checkpoint.c
index 076be2bf2..e7bea6afa 100644
--- a/db/db_checkpoint/db_checkpoint.c
+++ b/db/db_checkpoint/db_checkpoint.c
@@ -141,9 +141,9 @@ main(argc, argv)
 	 * If attaching to a pre-existing environment fails, create a
 	 * private one and try again.
 	 */
-	if ((ret = dbenv->open(dbenv, home, DB_USE_ENVIRON, 0)) != 0 &&
+	if ((ret = (dbenv->open)(dbenv, home, DB_USE_ENVIRON, 0)) != 0 &&
 	    (!once || ret == DB_VERSION_MISMATCH ||
-	    (ret = dbenv->open(dbenv, home,
+	    (ret = (dbenv->open)(dbenv, home,
 	    DB_CREATE | DB_INIT_TXN | DB_PRIVATE | DB_USE_ENVIRON, 0)) != 0)) {
 		dbenv->err(dbenv, ret, "DB_ENV->open");
 		goto shutdown;
diff --git a/db/db_codegen/code_capi.c b/db/db_codegen/code_capi.c
index 83615baab..3a836e628 100644
--- a/db/db_codegen/code_capi.c
+++ b/db/db_codegen/code_capi.c
@@ -368,7 +368,7 @@ static int\nbdb_env_startup(env_list_t *ep)\n{\n\
 \tif (ep->transaction)\n\
 \t	open_flags |= DB_INIT_LOCK |\n\
 \t	    DB_INIT_LOG | DB_INIT_TXN | DB_RECOVER;\n\
-\tif ((ret = dbenv->open(dbenv, ep->home, open_flags, 0)) != 0) {\n\
+\tif ((ret = (dbenv->open)(dbenv, ep->home, open_flags, 0)) != 0) {\n\
 \t	dbenv->err(dbenv, ret, \"DB_ENV->open: %%s\",  ep->home);\n\
 \t	goto err;\n\
 \t}\n\
@@ -487,7 +487,7 @@ api_c_db()
 
 	fprintf(of, "\
 \n\
-\tif ((ret = dbp->open(dbp, NULL, dp->name, NULL, dp->type,\n\
+\tif ((ret = (dbp->open)(dbp, NULL, dp->name, NULL, dp->type,\n\
 \t    (dp->transaction ? DB_AUTO_COMMIT : 0) |\n\
 \t    DB_CREATE | DB_THREAD, 0)) != 0) {\n\
 \t\tdbp->err(dbp, ret, \"DB->open: %%s\", dp->name);\n\
diff --git a/db/db_deadlock/db_deadlock.c b/db/db_deadlock/db_deadlock.c
index 4d412b659..3a3250748 100644
--- a/db/db_deadlock/db_deadlock.c
+++ b/db/db_deadlock/db_deadlock.c
@@ -157,7 +157,7 @@ main(argc, argv)
 	}
 
 	/* An environment is required. */
-	if ((ret = dbenv->open(dbenv, home, DB_USE_ENVIRON, 0)) != 0) {
+	if ((ret = (dbenv->open)(dbenv, home, DB_USE_ENVIRON, 0)) != 0) {
 		dbenv->err(dbenv, ret, "open");
 		goto shutdown;
 	}
diff --git a/db/db_dump/db_dump.c b/db/db_dump/db_dump.c
index 9e5f1f438..92fbaff6c 100644
--- a/db/db_dump/db_dump.c
+++ b/db/db_dump/db_dump.c
@@ -199,7 +199,7 @@ retry:	if ((ret = db_env_create(&dbenv, 0)) != 0) {
 		goto done;
 	}
 
-	if ((ret = dbp->open(dbp, NULL,
+	if ((ret = (dbp->open)(dbp, NULL,
 	    argv[0], subname, DB_UNKNOWN, DB_RDONLY, 0)) != 0) {
 		dbp->err(dbp, ret, "open: %s", argv[0]);
 		goto err;
@@ -296,7 +296,7 @@ db_init(dbenv, home, is_salvage, cache, is_privatep)
 	 * before we create our own.
 	 */
 	*is_privatep = 0;
-	if ((ret = dbenv->open(dbenv, home,
+	if ((ret = (dbenv->open)(dbenv, home,
 	    DB_USE_ENVIRON | (is_salvage ? DB_INIT_MPOOL : 0), 0)) == 0)
 		return (0);
 	if (ret == DB_VERSION_MISMATCH)
@@ -314,7 +314,7 @@ db_init(dbenv, home, is_salvage, cache, is_privatep)
 	 */
 	*is_privatep = 1;
 	if ((ret = dbenv->set_cachesize(dbenv, 0, cache, 1)) == 0 &&
-	    (ret = dbenv->open(dbenv, home,
+	    (ret = (dbenv->open)(dbenv, home,
 	    DB_CREATE | DB_INIT_MPOOL | DB_PRIVATE | DB_USE_ENVIRON, 0)) == 0)
 		return (0);
 
@@ -367,7 +367,7 @@ dump_sub(dbenv, parent_dbp, parent_name, pflag, keyflag)
 			free(subdb);
 			return (1);
 		}
-		if ((ret = dbp->open(dbp, NULL,
+		if ((ret = (dbp->open)(dbp, NULL,
 		    parent_name, subdb, DB_UNKNOWN, DB_RDONLY, 0)) != 0)
 			dbp->err(dbp, ret,
 			    "DB->open: %s:%s", parent_name, subdb);
diff --git a/db/db_hotbackup/db_hotbackup.c b/db/db_hotbackup/db_hotbackup.c
index e04fbdde0..9c4ffeccb 100644
--- a/db/db_hotbackup/db_hotbackup.c
+++ b/db/db_hotbackup/db_hotbackup.c
@@ -418,9 +418,9 @@ env_init(dbenvp, home, log_dirp, data_dirp, passwd, which)
 		 * We try to attach to a pre-existing environment; if that
 		 * fails, we create a private environment and try again.
 		 */
-		if ((ret = dbenv->open(dbenv, home, DB_USE_ENVIRON, 0)) != 0 &&
+		if ((ret = (dbenv->open)(dbenv, home, DB_USE_ENVIRON, 0)) != 0 &&
 		    (ret == DB_VERSION_MISMATCH ||
-		    (ret = dbenv->open(dbenv, home, DB_CREATE |
+		    (ret = (dbenv->open)(dbenv, home, DB_CREATE |
 		    DB_INIT_LOG | DB_INIT_TXN | DB_PRIVATE | DB_USE_ENVIRON,
 		    0)) != 0)) {
 			dbenv->err(dbenv, ret, "DB_ENV->open: %s", home);
@@ -445,7 +445,7 @@ env_init(dbenvp, home, log_dirp, data_dirp, passwd, which)
 			     ret, "DB_ENV->set_cachesize: %s", home);
 			return (1);
 		}
-		if ((ret = dbenv->open(dbenv, home, DB_CREATE |
+		if ((ret = (dbenv->open)(dbenv, home, DB_CREATE |
 		    DB_INIT_LOG | DB_INIT_MPOOL | DB_INIT_TXN | DB_PRIVATE |
 		    DB_RECOVER_FATAL | DB_USE_ENVIRON, 0)) != 0) {
 			dbenv->err(dbenv, ret, "DB_ENV->open: %s", home);
diff --git a/db/db_load/db_load.c b/db/db_load/db_load.c
index 66131847a..a403586b1 100644
--- a/db/db_load/db_load.c
+++ b/db/db_load/db_load.c
@@ -394,7 +394,7 @@ retry_db:
 #endif
 
 	/* Open the DB file. */
-	if ((ret = dbp->open(dbp, NULL, name, subdb, dbtype,
+	if ((ret = (dbp->open)(dbp, NULL, name, subdb, dbtype,
 	    DB_CREATE | (TXN_ON(dbenv) ? DB_AUTO_COMMIT : 0),
 	    __db_omode("rw-rw-rw-"))) != 0) {
 		dbp->err(dbp, ret, "DB->open: %s", name);
@@ -608,7 +608,7 @@ db_init(dbenv, home, cache, is_private)
 	/* We may be loading into a live environment.  Try and join. */
 	flags = DB_USE_ENVIRON |
 	    DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_MPOOL | DB_INIT_TXN;
-	if ((ret = dbenv->open(dbenv, home, flags, 0)) == 0)
+	if ((ret = (dbenv->open)(dbenv, home, flags, 0)) == 0)
 		return (0);
 	if (ret == DB_VERSION_MISMATCH)
 		goto err;
@@ -632,7 +632,7 @@ db_init(dbenv, home, cache, is_private)
 		dbenv->err(dbenv, ret, "set_cachesize");
 		return (1);
 	}
-	if ((ret = dbenv->open(dbenv, home, flags, 0)) == 0)
+	if ((ret = (dbenv->open)(dbenv, home, flags, 0)) == 0)
 		return (0);
 
 	/* An environment is required. */
diff --git a/db/db_printlog/db_printlog.c b/db/db_printlog/db_printlog.c
index 035dbbdfa..f2797fa3f 100644
--- a/db/db_printlog/db_printlog.c
+++ b/db/db_printlog/db_printlog.c
@@ -173,18 +173,18 @@ main(argc, argv)
 	 * with logging, because we don't want to log the opens.
 	 */
 	if (repflag) {
-		if ((ret = dbenv->open(dbenv, home,
+		if ((ret = (dbenv->open)(dbenv, home,
 		    DB_INIT_MPOOL | DB_USE_ENVIRON, 0)) != 0 &&
 		    (ret == DB_VERSION_MISMATCH ||
-		    (ret = dbenv->open(dbenv, home,
+		    (ret = (dbenv->open)(dbenv, home,
 		    DB_CREATE | DB_INIT_MPOOL | DB_PRIVATE | DB_USE_ENVIRON, 0))
 		    != 0)) {
 			dbenv->err(dbenv, ret, "DB_ENV->open");
 			goto shutdown;
 		}
-	} else if ((ret = dbenv->open(dbenv, home, DB_USE_ENVIRON, 0)) != 0 &&
+	} else if ((ret = (dbenv->open)(dbenv, home, DB_USE_ENVIRON, 0)) != 0 &&
 	    (ret == DB_VERSION_MISMATCH ||
-	    (ret = dbenv->open(dbenv, home,
+	    (ret = (dbenv->open)(dbenv, home,
 	    DB_CREATE | DB_INIT_LOG | DB_PRIVATE | DB_USE_ENVIRON, 0)) != 0)) {
 		dbenv->err(dbenv, ret, "DB_ENV->open");
 		goto shutdown;
@@ -544,7 +544,7 @@ open_rep_db(dbenv, dbpp, dbcp)
 
 	dbp = *dbpp;
 	if ((ret =
-	    dbp->open(dbp, NULL, REPDBNAME, NULL, DB_BTREE, 0, 0)) != 0) {
+	    (dbp->open)(dbp, NULL, REPDBNAME, NULL, DB_BTREE, 0, 0)) != 0) {
 		dbenv->err(dbenv, ret, "DB->open");
 		goto err;
 	}
diff --git a/db/db_recover/db_recover.c b/db/db_recover/db_recover.c
index 4e5c12d8e..11e3458f8 100644
--- a/db/db_recover/db_recover.c
+++ b/db/db_recover/db_recover.c
@@ -138,7 +138,7 @@ main(argc, argv)
 	    DB_INIT_MPOOL | DB_INIT_TXN | DB_USE_ENVIRON);
 	LF_SET(fatal_recover ? DB_RECOVER_FATAL : DB_RECOVER);
 	LF_SET(retain_env ? DB_INIT_LOCK : DB_PRIVATE);
-	if ((ret = dbenv->open(dbenv, home, flags, 0)) != 0) {
+	if ((ret = (dbenv->open)(dbenv, home, flags, 0)) != 0) {
 		dbenv->err(dbenv, ret, "DB_ENV->open");
 		goto shutdown;
 	}
diff --git a/db/db_stat/db_stat.c b/db/db_stat/db_stat.c
index 2ae62f683..417838b5e 100644
--- a/db/db_stat/db_stat.c
+++ b/db/db_stat/db_stat.c
@@ -282,9 +282,9 @@ retry:	if ((ret = db_env_create(&dbenv, 0)) != 0) {
 		 * hash databases for which we don't know the hash function).
 		 */
 		dbenv->set_errfile(dbenv, NULL);
-		ret = dbp->open(dbp, NULL, db, subdb, DB_UNKNOWN, 0, 0);
+		ret = (dbp->open)(dbp, NULL, db, subdb, DB_UNKNOWN, 0, 0);
 		dbenv->set_errfile(dbenv, stderr);
-		if (ret != 0 && (ret = dbp->open(
+		if (ret != 0 && (ret = (dbp->open)(
 		    dbp, NULL, db, subdb, DB_UNKNOWN, DB_RDONLY, 0)) != 0) {
 			dbenv->err(dbenv, ret, "DB->open: %s", db);
 			goto err;
@@ -392,7 +392,7 @@ db_init(dbenv, home, ttype, cache, is_private)
 	 * error, I think.
 	 */
 	*is_private = 0;
-	if ((ret = dbenv->open(dbenv, home, DB_USE_ENVIRON, 0)) == 0)
+	if ((ret = (dbenv->open)(dbenv, home, DB_USE_ENVIRON, 0)) == 0)
 		return (0);
 	if (ret == DB_VERSION_MISMATCH)
 		goto err;
@@ -422,7 +422,7 @@ db_init(dbenv, home, ttype, cache, is_private)
 		oflags |= DB_INIT_MPOOL;
 	if (ttype == T_LOG)
 		oflags |= DB_INIT_LOG;
-	if ((ret = dbenv->open(dbenv, home, oflags, 0)) == 0)
+	if ((ret = (dbenv->open)(dbenv, home, oflags, 0)) == 0)
 		return (0);
 
 	/* An environment is required. */
diff --git a/db/db_upgrade/db_upgrade.c b/db/db_upgrade/db_upgrade.c
index 05e5dc187..1b09746c0 100644
--- a/db/db_upgrade/db_upgrade.c
+++ b/db/db_upgrade/db_upgrade.c
@@ -119,9 +119,9 @@ main(argc, argv)
 	 * If attaching to a pre-existing environment fails, create a
 	 * private one and try again.
 	 */
-	if ((ret = dbenv->open(dbenv, home, DB_USE_ENVIRON, 0)) != 0 &&
+	if ((ret = (dbenv->open)(dbenv, home, DB_USE_ENVIRON, 0)) != 0 &&
 	    (ret == DB_VERSION_MISMATCH ||
-	    (ret = dbenv->open(dbenv, home,
+	    (ret = (dbenv->open)(dbenv, home,
 	    DB_CREATE | DB_INIT_MPOOL | DB_PRIVATE | DB_USE_ENVIRON,
 	    0)) != 0)) {
 		dbenv->err(dbenv, ret, "DB_ENV->open");
diff --git a/db/db_verify/db_verify.c b/db/db_verify/db_verify.c
index f0533b717..259f285ce 100644
--- a/db/db_verify/db_verify.c
+++ b/db/db_verify/db_verify.c
@@ -129,7 +129,7 @@ retry:	if ((ret = db_env_create(&dbenv, 0)) != 0) {
 	 */
 	private = 0;
 	if ((ret =
-	    dbenv->open(dbenv, home, DB_INIT_MPOOL | DB_USE_ENVIRON, 0)) != 0) {
+	    (dbenv->open)(dbenv, home, DB_INIT_MPOOL | DB_USE_ENVIRON, 0)) != 0) {
 		if (ret != DB_VERSION_MISMATCH) {
 			if ((ret =
 			    dbenv->set_cachesize(dbenv, 0, cache, 1)) != 0) {
@@ -137,7 +137,7 @@ retry:	if ((ret = db_env_create(&dbenv, 0)) != 0) {
 				goto shutdown;
 			}
 			private = 1;
-			ret = dbenv->open(dbenv, home, DB_CREATE |
+			ret = (dbenv->open)(dbenv, home, DB_CREATE |
 			    DB_INIT_MPOOL | DB_PRIVATE | DB_USE_ENVIRON, 0);
 		}
 		if (ret != 0) {
@@ -186,7 +186,7 @@ retry:	if ((ret = db_env_create(&dbenv, 0)) != 0) {
 				goto shutdown;
 			}
 
-			ret = dbp1->open(dbp1,
+			ret = (dbp1->open)(dbp1,
 			    NULL, argv[0], NULL, DB_UNKNOWN, DB_RDONLY, 0);
 
 			/*
diff --git a/db/dbm/dbm.c b/db/dbm/dbm.c
index b4af224a6..ea88d39bc 100644
--- a/db/dbm/dbm.c
+++ b/db/dbm/dbm.c
@@ -230,7 +230,7 @@ __db_ndbm_open(file, oflags, mode)
 	if ((ret = dbp->set_pagesize(dbp, 4096)) != 0 ||
 	    (ret = dbp->set_h_ffactor(dbp, 40)) != 0 ||
 	    (ret = dbp->set_h_nelem(dbp, 1)) != 0 ||
-	    (ret = dbp->open(dbp, NULL,
+	    (ret = (dbp->open)(dbp, NULL,
 	    path, NULL, DB_HASH, __db_oflags(oflags), mode)) != 0) {
 		__os_set_errno(ret);
 		return (NULL);
diff --git a/db/hsearch/hsearch.c b/db/hsearch/hsearch.c
index 4a750a25a..3bb0a4d50 100644
--- a/db/hsearch/hsearch.c
+++ b/db/hsearch/hsearch.c
@@ -75,7 +75,7 @@ __db_hcreate(nel)
 	if ((ret = dbp->set_pagesize(dbp, 512)) != 0 ||
 	    (ret = dbp->set_h_ffactor(dbp, 16)) != 0 ||
 	    (ret = dbp->set_h_nelem(dbp, (u_int32_t)nel)) != 0 ||
-	    (ret = dbp->open(dbp, NULL,
+	    (ret = (dbp->open)(dbp, NULL,
 	    NULL, NULL, DB_HASH, DB_CREATE, __db_omode(OWNER_RW))) != 0)
 		__os_set_errno(ret);
 
diff --git a/db/libdb_java/db_java_wrap.c b/db/libdb_java/db_java_wrap.c
index 7e047e52e..ff3a54a7c 100644
--- a/db/libdb_java/db_java_wrap.c
+++ b/db/libdb_java/db_java_wrap.c
@@ -2501,7 +2501,7 @@ SWIGINTERN db_ret_t Db_key_range(struct Db *self,DB_TXN *txnid,DBT *key,DB_KEY_R
 		return self->key_range(self, txnid, key, key_range, flags);
 	}
 SWIGINTERN db_ret_t Db_open(struct Db *self,DB_TXN *txnid,char const *file,char const *database,DBTYPE type,u_int32_t flags,int mode){
-		return self->open(self, txnid, file, database,
+		return (self->open)(self, txnid, file, database,
 		    type, flags, mode);
 	}
 SWIGINTERN int Db_pget(struct Db *self,DB_TXN *txnid,DBT *key,DBT *pkey,DBT *data,u_int32_t flags){
@@ -2723,7 +2723,7 @@ SWIGINTERN db_ret_t DbEnv_lsn_reset(struct DbEnv *self,char const *file,u_int32_
 		return self->lsn_reset(self, file, flags);
 	}
 SWIGINTERN db_ret_t DbEnv_open(struct DbEnv *self,char const *db_home,u_int32_t flags,int mode){
-		return self->open(self, db_home, flags, mode);
+		return (self->open)(self, db_home, flags, mode);
 	}
 SWIGINTERN db_ret_t DbEnv_remove(struct DbEnv *self,char const *db_home,u_int32_t flags){
 		return self->remove(self, db_home, flags);
@@ -3278,7 +3278,7 @@ SWIGINTERN db_ret_t DbSequence_initial_value(struct DbSequence *self,db_seq_t va
 		return self->initial_value(self, val);
 	}
 SWIGINTERN db_ret_t DbSequence_open(struct DbSequence *self,DB_TXN *txnid,DBT *key,u_int32_t flags){
-		return self->open(self, txnid, key, flags);
+		return (self->open)(self, txnid, key, flags);
 	}
 SWIGINTERN db_ret_t DbSequence_remove(struct DbSequence *self,DB_TXN *txnid,u_int32_t flags){
 		return self->remove(self, txnid, flags);
diff --git a/db/mutex/test_mutex.c b/db/mutex/test_mutex.c
index b0fc8397b..3055f6929 100644
--- a/db/mutex/test_mutex.c
+++ b/db/mutex/test_mutex.c
@@ -673,7 +673,7 @@ tm_env_init()
 		home = TESTDIR;
 	if (nthreads != 1)
 		flags |= DB_THREAD;
-	if ((ret = dbenv->open(dbenv, home, flags, 0)) != 0) {
+	if ((ret = (dbenv->open)(dbenv, home, flags, 0)) != 0) {
 		dbenv->err(dbenv, ret, "environment open: %s", home);
 		return (1);
 	}
diff --git a/db/rpc_server/c/db_server_proc.c b/db/rpc_server/c/db_server_proc.c
index dd10f93ab..4bb697360 100644
--- a/db/rpc_server/c/db_server_proc.c
+++ b/db/rpc_server/c/db_server_proc.c
@@ -394,7 +394,7 @@ __env_open_proc(dbenvcl_id, home, flags, mode, replyp)
 		replyp->envcl_id = new_ctp->ct_id;
 		ret = __env_close_int(dbenvcl_id, 0, 0);
 	} else {
-		ret = dbenv->open(dbenv, fullhome->home, newflags, mode);
+		ret = (dbenv->open)(dbenv, fullhome->home, newflags, mode);
 		dbenv_ctp->ct_envdp.home = fullhome;
 		dbenv_ctp->ct_envdp.envflags = shareflags;
 	}
@@ -1392,7 +1392,7 @@ __db_open_proc(dbpcl_id, txnpcl_id, name, subdb, type, flags, mode, replyp)
 		ret = __db_close_int(dbpcl_id, 0);
 		goto out;
 	}
-	ret = dbp->open(dbp, txnp, name, subdb, (DBTYPE)type, flags, mode);
+	ret = (dbp->open)(dbp, txnp, name, subdb, (DBTYPE)type, flags, mode);
 	if (ret == 0) {
 		(void)dbp->get_type(dbp, &dbtype);
 		replyp->type = dbtype;
diff --git a/db/rpc_server/c/db_server_util.c b/db/rpc_server/c/db_server_util.c
index ac5bbc8c4..714852b3e 100644
--- a/db/rpc_server/c/db_server_util.c
+++ b/db/rpc_server/c/db_server_util.c
@@ -802,7 +802,7 @@ env_recover(progname)
 			printf("Running recovery on %s\n", hp->home);
 		flags = DB_CREATE | DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_MPOOL |
 		    DB_INIT_TXN | DB_USE_ENVIRON | DB_RECOVER;
-		if ((ret = dbenv->open(dbenv, hp->home, flags, 0)) != 0) {
+		if ((ret = (dbenv->open)(dbenv, hp->home, flags, 0)) != 0) {
 			dbenv->err(dbenv, ret, "DB_ENV->open");
 			goto error;
 		}
diff --git a/db/xa/xa.c b/db/xa/xa.c
index 74224541e..b6485b845 100644
--- a/db/xa/xa.c
+++ b/db/xa/xa.c
@@ -206,7 +206,7 @@ __db_xa_open(xa_info, rmid, arg_flags)
 	/* Open a new environment. */
 	if (db_env_create(&dbenv, 0) != 0)
 		return (XAER_RMERR);
-	if (dbenv->open(dbenv, xa_info, XA_FLAGS, 0) != 0)
+	if ((dbenv->open)(dbenv, xa_info, XA_FLAGS, 0) != 0)
 		goto err;
 
 	/* Create the mapping. */
diff --git a/db/xa/xa_db.c b/db/xa/xa_db.c
index 74ec74808..38c199c67 100644
--- a/db/xa/xa_db.c
+++ b/db/xa/xa_db.c
@@ -131,7 +131,7 @@ __xa_open(dbp, txn, name, subdb, type, flags, mode)
 	if ((ret =
 	    __xa_set_txn(dbp, &txn, LF_ISSET(DB_AUTO_COMMIT) ? 1 : 0)) != 0)
 		return (ret);
-	if ((ret = xam->open(dbp, txn, name, subdb, type, flags, mode)) != 0)
+	if ((ret = (xam->open)(dbp, txn, name, subdb, type, flags, mode)) != 0)
 		return (ret);
 
 	/* Wrap any DB handle method that takes a TXN ID as an argument. */