=== modified file 'midori/midori-preferences.c'
--- midori/midori-preferences.c	2014-02-22 14:06:19 +0000
+++ midori/midori-preferences.c	2014-08-20 21:47:46 +0000
@@ -160,6 +160,28 @@
 }
 
 static void
+midori_preferences_homepage_current_update_sentivity(
+					GtkWidget*        preferences,
+					GtkWidget*        entry,
+                                        GtkWidget* 	  button)
+{
+    GtkWidget* browser = katze_object_get_object (preferences, "transient-for");
+    gchar* uri = katze_object_get_string (browser, "uri");
+    const gchar* entry_text = gtk_entry_get_text ((GtkEntry*)entry);
+    gboolean sensitive = strcmp(uri, entry_text) ? true : false;
+    gtk_widget_set_sensitive (button, sensitive);
+    g_free(uri);
+}
+
+static void
+midori_preferences_homepage_entry_changed_cb (GtkWidget*        entry,
+                                              GtkWidget* 	button)
+{
+    GtkWidget* preferences = gtk_widget_get_toplevel (button);
+    midori_preferences_homepage_current_update_sentivity(preferences, entry, button);
+}
+
+static void
 midori_preferences_homepage_current_clicked_cb (GtkWidget*         button,
                                                 MidoriWebSettings* settings)
 {
@@ -325,6 +347,11 @@
         #endif
         g_signal_connect (button, "clicked",
             G_CALLBACK (midori_preferences_homepage_current_clicked_cb), settings);
+
+        midori_preferences_homepage_current_update_sentivity((GtkWidget*)preferences, entry, button);
+        g_signal_connect (entry, "changed",
+            G_CALLBACK (midori_preferences_homepage_entry_changed_cb), button);
+
         SPANNED_ADD (button);
     }
     }