diff --git a/pkgs/sane-scripts/default.nix b/pkgs/sane-scripts/default.nix
index 3a65f6c5..302a386b 100644
--- a/pkgs/sane-scripts/default.nix
+++ b/pkgs/sane-scripts/default.nix
@@ -74,7 +74,7 @@ let
           # not sure if/where that lack of suid causes problems.
           umount = true;
         };
-        prologue = ./resholve-prologue;
+        prologue = "${./resholve-prologue}";
 
         # list of programs which *can* or *cannot* exec their arguments
         execer = with pkgs; [