diff --git a/tools/build/gnome-shell.modules b/tools/build/gnome-shell.modules
index a0d115a3f..7b9277876 100644
--- a/tools/build/gnome-shell.modules
+++ b/tools/build/gnome-shell.modules
@@ -85,7 +85,7 @@
   </autotools>
 
   <autotools id="gtk3">
-    <branch checkoutdir="gtk3" repo="git.gnome.org" module="gtk%2b"/>
+    <branch checkoutdir="gtk3" repo="git.gnome.org" module="gtk+"/>
     <dependencies>
       <dep package="glib"/>
       <dep package="pango"/>