diff --git a/systems/ceres/config/filesystem.nix b/systems/ceres/config/filesystem.nix
index 3a4d3ca..3ab6ff9 100755
--- a/systems/ceres/config/filesystem.nix
+++ b/systems/ceres/config/filesystem.nix
@@ -54,7 +54,7 @@ in
     };
   boot.initrd.postResumeCommands = lib.mkAfter ''
     mkdir /btrfs_tmp
-    mount -o subvolid=5 /dev/sdb2 /btrfs_tmp
+    mount -o subvolid=5 /dev/sda2 /btrfs_tmp
 
     if [[ -e /btrfs_tmp/root ]]; then
         mkdir -p /btrfs_tmp/old_roots