diff --git a/pkgs/tools/security/gitleaks/default.nix b/pkgs/tools/security/gitleaks/default.nix
index 207ee746a107c..47908e95c512b 100644
--- a/pkgs/tools/security/gitleaks/default.nix
+++ b/pkgs/tools/security/gitleaks/default.nix
@@ -1,5 +1,6 @@
 {
   lib,
+  stdenv,
   buildGoModule,
   fetchFromGitHub,
   gitleaks,
@@ -31,7 +32,7 @@ buildGoModule rec {
   # With v8 the config tests are are blocking
   doCheck = false;
 
-  postInstall = ''
+  postInstall = lib.optionalString (stdenv.buildPlatform.canExecute stdenv.hostPlatform) ''
     installShellCompletion --cmd ${pname} \
       --bash <($out/bin/${pname} completion bash) \
       --fish <($out/bin/${pname} completion fish) \