diff --git a/fs/btrfs/props.c b/fs/btrfs/props.c
index fd19f3078566755ffe540ee209ff6b9a3b531bc1..61d22a56c0ba4e7d43f0552854f4ac4e82443218 100644
--- a/fs/btrfs/props.c
+++ b/fs/btrfs/props.c
@@ -366,11 +366,11 @@ int btrfs_subvol_inherit_props(struct btrfs_trans_handle *trans,
 
 static int prop_compression_validate(const char *value, size_t len)
 {
-	if (!strncmp("lzo", value, len))
+	if (!strncmp("lzo", value, 3))
 		return 0;
-	else if (!strncmp("zlib", value, len))
+	else if (!strncmp("zlib", value, 4))
 		return 0;
-	else if (!strncmp("zstd", value, len))
+	else if (!strncmp("zstd", value, 4))
 		return 0;
 
 	return -EINVAL;