diff --git a/fs/ext4/mmp.c b/fs/ext4/mmp.c
index 048c52af2fb6..6eb1a619890c 100644
--- a/fs/ext4/mmp.c
+++ b/fs/ext4/mmp.c
@@ -115,7 +115,7 @@ warn_exit:
 void __dump_mmp_msg(struct super_block *sb, struct mmp_struct *mmp,
 		    const char *function, unsigned int line, const char *msg)
 {
-	__ext4_warning(sb, function, line, msg);
+	__ext4_warning(sb, function, line, "%s", msg);
 	__ext4_warning(sb, function, line,
 		       "MMP failure info: last update time: %llu, last update "
 		       "node: %s, last update device: %s\n",