diff --git a/fs/squashfs/sqfs.c b/fs/squashfs/sqfs.c
index 547d2fd4b3..90bf32ca0a 100644
--- a/fs/squashfs/sqfs.c
+++ b/fs/squashfs/sqfs.c
@@ -49,7 +49,7 @@ static int sqfs_read_sblk(struct squashfs_super_block **sblk)
 
 	if (sqfs_disk_read(0, 1, *sblk) != 1) {
 		free(*sblk);
-		sblk = NULL;
+		*sblk = NULL;
 		return -EINVAL;
 	}