diff --git a/devices/google-walleye/kernel/default.nix b/devices/google-walleye/kernel/default.nix
index 5f0add65..5a719af4 100644
--- a/devices/google-walleye/kernel/default.nix
+++ b/devices/google-walleye/kernel/default.nix
@@ -31,9 +31,8 @@ in
   ];
 
   isModular = false;
-}).overrideAttrs({ postInstall ? "", postPatch ? "", nativeBuildInputs, ... }: {
-  installTargets = [ "zinstall" "Image.gz-dtb" "install" ];
-  postPatch = postPatch + ''
+
+  postPatch = ''
     # FIXME : factor out
     (
     # Remove -Werror from all makefiles
@@ -47,6 +46,9 @@ in
     done
     )
   '';
+}).overrideAttrs({ postInstall ? "", nativeBuildInputs, ... }: {
+  installTargets = [ "zinstall" "Image.gz-dtb" "install" ];
+
   nativeBuildInputs = nativeBuildInputs ++ [ dtc ];
 
   postInstall = postInstall + ''