diff --git a/games/qtsixa/doinst.sh b/games/qtsixa/doinst.sh
index b7bc7f18fa..b7b72f4685 100644
--- a/games/qtsixa/doinst.sh
+++ b/games/qtsixa/doinst.sh
@@ -32,6 +32,6 @@ fi
 
 if [ -e usr/share/icons/hicolor/icon-theme.cache ]; then
   if [ -x /usr/bin/gtk-update-icon-cache ]; then
-    /usr/bin/gtk-update-icon-cache usr/share/icons/hicolor >/dev/null 2>&1
+    /usr/bin/gtk-update-icon-cache -f usr/share/icons/hicolor >/dev/null 2>&1
   fi
 fi