diff --git a/sys/fs/unionfs/union.h b/sys/fs/unionfs/union.h
index 12d3ef3453b1..29e53f6d9025 100644
--- a/sys/fs/unionfs/union.h
+++ b/sys/fs/unionfs/union.h
@@ -43,7 +43,7 @@ struct union_args {
 	int		mntflags;	/* Options on the mount */
 };
 
-#define UNMNT_ABOVE	0x0001		/* Target appears below mount point */
+#define UNMNT_ABOVE	0x0001		/* Target appears above mount point */
 #define UNMNT_BELOW	0x0002		/* Target appears below mount point */
 #define UNMNT_REPLACE	0x0003		/* Target replaces mount point */
 #define UNMNT_OPMASK	0x0003