diff --git a/pkgs/writeXrandrScriptBin.nix b/pkgs/writeXrandrScriptBin.nix
index 47f04c1..d5f8002 100644
--- a/pkgs/writeXrandrScriptBin.nix
+++ b/pkgs/writeXrandrScriptBin.nix
@@ -14,7 +14,7 @@ let
 
   getArgList = output: config:
     (escapeShellArgs (lists.flatten [
-      (toGNUCommandLine { } { "--output" = output; })
+      (toGNUCommandLine { } { inherit output; })
       (lists.optional (isPrimary config) "--primary")
       (toGNUCommandLine { } config)
     ]));