diff --git a/fdbserver/storageserver.actor.cpp b/fdbserver/storageserver.actor.cpp
index 199531ffb1..7e15b13e32 100644
--- a/fdbserver/storageserver.actor.cpp
+++ b/fdbserver/storageserver.actor.cpp
@@ -186,7 +186,7 @@ struct StorageServerDisk {
 private:
 	struct StorageServer* data;
 	IKeyValueStore* storage;
-	bool _canPipelineCommits;
+	const bool _canPipelineCommits;
 
 	ACTOR static Future<Key> readFirstKey( IKeyValueStore* storage, KeyRangeRef range ) {
 		Standalone<RangeResultRef> r = wait( storage->readRange( range, 1 ) );