diff --git a/midori/midori-browser.c b/midori/midori-browser.c
index f116863c..04042497 100644
--- a/midori/midori-browser.c
+++ b/midori/midori-browser.c
@@ -1253,7 +1253,7 @@ midori_browser_notify_new_tab (MidoriBrowser *browser)
     if (katze_object_get_boolean (browser->settings, "flash-window-on-new-bg-tabs"))
     {
         gtk_window_set_opacity (GTK_WINDOW (browser), 0.8);
-        gtk_timeout_add (100, (GtkFunction) midori_browser_notify_new_tab_timeout_cb, browser);
+        g_timeout_add (100, (GSourceFunc) midori_browser_notify_new_tab_timeout_cb, browser);
     }
 }