diff --git a/raspberry-pi/4/pkgs-overlays.nix b/raspberry-pi/4/pkgs-overlays.nix
index c290d2a..71db89f 100644
--- a/raspberry-pi/4/pkgs-overlays.nix
+++ b/raspberry-pi/4/pkgs-overlays.nix
@@ -2,7 +2,7 @@
 let
   cfg = config.hardware.raspberry-pi."4".apply-overlays-dtmerge;
   dt_ao_overlay = (final: prev: {
-    deviceTree.applyOverlays = (prev.callPackage ./apply-overlays-dtmerge.nix { })
+    deviceTree.applyOverlays = (prev.callPackage ./apply-overlays-dtmerge.nix { });
   });
 in {
   options.hardware = {