--- a/src/support.h
+++ b/src/support.h
@@ -148,5 +148,7 @@ G_GNUC_INTERNAL void murrine_set_toolbar
 G_GNUC_INTERNAL void murrine_get_notebook_tab_position (GtkWidget *widget,
                                                         gboolean  *start,
                                                         gboolean  *end);
+gboolean murrine_object_is_a (const GObject * object, const gchar * type_name);
+gboolean murrine_widget_is_ltr (GtkWidget *widget);
 
 #endif /* SUPPORT_H */
--- a/src/murrine_rc_style.h
+++ b/src/murrine_rc_style.h
@@ -154,5 +154,6 @@ struct _MurrineRcStyleClass
 };
 
 GType murrine_rc_style_get_type	(void);
+void murrine_rc_style_register_types (GTypeModule *module);
 
 #endif /* MURRINE_RC_STYLE_H */
--- a/src/murrine_style.h
+++ b/src/murrine_style.h
@@ -102,5 +102,6 @@ struct _MurrineStyleClass
 };
 
 GType murrine_style_get_type (void);
+void murrine_style_register_types (GTypeModule *module);
 
 #endif /* MURRINE_STYLE_H */
