diff --git a/fs/hmdfs/super.c b/fs/hmdfs/super.c
index 52cc857f5e45f55a874d219d673b35cfcc97c73e..a4b1170153b373030b2fc070ebd0a2f5d342d86e 100644
--- a/fs/hmdfs/super.c
+++ b/fs/hmdfs/super.c
@@ -63,6 +63,8 @@ static int hmdfs_match_strdup(const substring_t *s, char **dst)
 	if (!dup)
 		return -ENOMEM;
 
+	if (*dst)
+		kfree(*dst);
 	*dst = dup;
 
 	return 0;