diff --git a/pkgs/by-name/ps/pscale/package.nix b/pkgs/by-name/ps/pscale/package.nix
index ffbd140a6627..8a6829654626 100644
--- a/pkgs/by-name/ps/pscale/package.nix
+++ b/pkgs/by-name/ps/pscale/package.nix
@@ -1,4 +1,5 @@
 {
+  stdenv,
   buildGoModule,
   fetchFromGitHub,
   installShellFiles,
@@ -30,7 +31,7 @@ buildGoModule rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  postInstall = ''
+  postInstall = lib.optionalString (stdenv.buildPlatform.canExecute stdenv.hostPlatform) ''
     installShellCompletion --cmd pscale \
       --bash <($out/bin/pscale completion bash) \
       --fish <($out/bin/pscale completion fish) \