diff --git a/data/cartridges.gresource.xml.in b/data/cartridges.gresource.xml.in
index 1205656..203edea 100644
--- a/data/cartridges.gresource.xml.in
+++ b/data/cartridges.gresource.xml.in
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <gresources>
-  <gresource prefix="/hu/kramo/Cartridges/Devel/">
+  <gresource prefix="@PREFIX@">
     <file preprocess="xml-stripblanks">gtk/window.ui</file>
     <file preprocess="xml-stripblanks">gtk/help-overlay.ui</file>
     <file preprocess="xml-stripblanks">gtk/game.ui</file>