diff --git a/pkgs/desktops/deepin/go-gir-generator/default.nix b/pkgs/desktops/deepin/go-gir-generator/default.nix
index e6e70d2c1673..bd979b31784f 100644
--- a/pkgs/desktops/deepin/go-gir-generator/default.nix
+++ b/pkgs/desktops/deepin/go-gir-generator/default.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation rec {
 
   makeFlags = [
     "PREFIX=$(out)"
-    "GOCACHE=$TMPDIR/go-cache"
+    "GOCACHE=$(TMPDIR)/go-cache"
   ];
 
   passthru.updateScript = deepin.updateScript { inherit name; };