1 files changed, 1 insertions, 1 deletions
diff --git a/nixpkgs/nixos/modules/services/x11/window-managers/xmonad.nix b/nixpkgs/nixos/modules/services/x11/window-managers/xmonad.nix
index a6055f26789e..0e1314122767 100644
--- a/nixpkgs/nixos/modules/services/x11/window-managers/xmonad.nix
+++ b/nixpkgs/nixos/modules/services/x11/window-managers/xmonad.nix
@@ -59,7 +59,7 @@ in
 
       config = mkOption {
         default = null;
-        type = with lib.types; nullOr (either path string);
+        type = with lib.types; nullOr (either path str);
         description = ''
           Configuration from which XMonad gets compiled. If no value
           is specified, the xmonad config from $HOME/.xmonad is taken.