diff --git a/nixos/modules/tasks/filesystems/bcachefs.nix b/nixos/modules/tasks/filesystems/bcachefs.nix
index d144ce62dc27e..1a1bbf8f6a810 100644
--- a/nixos/modules/tasks/filesystems/bcachefs.nix
+++ b/nixos/modules/tasks/filesystems/bcachefs.nix
@@ -20,6 +20,7 @@ let
         printf "waiting for device to appear $path"
         for try in $(seq 10); do
           if [ -e $path ]; then
+              target=$(readlink -f $path)
               success=true
               break
           else