diff --git a/pkgs/development/interpreters/gauche/default.nix b/pkgs/development/interpreters/gauche/default.nix
index aa58be639b9d..d596455fe015 100644
--- a/pkgs/development/interpreters/gauche/default.nix
+++ b/pkgs/development/interpreters/gauche/default.nix
@@ -21,6 +21,8 @@ stdenv.mkDerivation rec {
   '';
 
   postPatch = ''
+    substituteInPlace ext/package-templates/configure \
+      --replace "#!/usr/bin/env gosh" "#!$out/bin/gosh"
     patchShebangs .
   '';