diff --git a/pkgs/desktops/deepin/go-dbus-generator/default.nix b/pkgs/desktops/deepin/go-dbus-generator/default.nix
index 137ad3dafe0..1e3da129a61 100644
--- a/pkgs/desktops/deepin/go-dbus-generator/default.nix
+++ b/pkgs/desktops/deepin/go-dbus-generator/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
 
   makeFlags = [
     "PREFIX=$(out)"
-    "GOCACHE=$TMPDIR/go-cache"
+    "GOCACHE=$(TMPDIR)/go-cache"
   ];
 
   passthru.updateScript = deepin.updateScript { inherit name; };