diff --git a/pkgs/build-support/go/garble.nix b/pkgs/build-support/go/garble.nix
index 27277d1b9925..da1e3152ba4c 100644
--- a/pkgs/build-support/go/garble.nix
+++ b/pkgs/build-support/go/garble.nix
@@ -1,4 +1,5 @@
-{ buildGoModule
+{ stdenv
+, buildGoModule
 , fetchFromGitHub
 , lib
 }:
@@ -15,6 +16,15 @@ buildGoModule rec {
 
   vendorSha256 = "sha256-x2fk2QmZDK2yjyfYdK7x+sQjvt7tuggmm8ieVjsNKek=";
 
+  preBuild = ''
+    # https://github.com/burrowers/garble/issues/184
+    substituteInPlace testdata/scripts/tiny.txt \
+      --replace "{6,8}" "{4,8}"
+  '' + lib.optionalString (!stdenv.isx86_64) ''
+    # The test assumex amd64 assembly
+    rm testdata/scripts/asm.txt
+  '';
+
   meta = {
     description = "Obfuscate Go code by wrapping the Go toolchain";
     homepage = "https://github.com/burrowers/garble/";