diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index dcd5aef6b6148adf6e684e55dcc3dbf04db2b094..6befcaf253bd7e03175b5a1a241c227827d84a81 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -448,6 +448,7 @@ static int btrfs_parse_early_options(const char *options, fmode_t flags,
 		token = match_token(p, tokens, args);
 		switch (token) {
 		case Opt_subvol:
+			kfree(*subvol_name);
 			*subvol_name = match_strdup(&args[0]);
 			break;
 		case Opt_subvolid: