--- a/src/dialog.h
+++ b/src/dialog.h
@@ -22,7 +22,6 @@
 /* Useful miscellaneous dialogs */
 
 #include <gtk/gtk.h>
-#include <gdu/gdu.h>
 
 /* Run a dialog showing the formatted error message */
 int
@@ -33,27 +32,4 @@
 dialog_warning(GtkWindow *parent_win, GtkDialogFlags flags,
         const char *message, ...) G_GNUC_PRINTF(3, 4);
 
-typedef struct _PropertiesDialog PropertiesDialog;
-
-/* Caller should call show()/destroy() etc */
-PropertiesDialog *
-dialog_properties_new(GduPresentable *pres, GduDevice *dev);
-
-GtkWidget *
-dialog_properties_get_widget(PropertiesDialog *pd);
-
-void
-dialog_properties_update(PropertiesDialog *pd);
-
-/* This doesn't destroy the dialog */
-inline static void
-dialog_properties_free(PropertiesDialog *pd)
-{
-    g_free(pd);
-}
-
-/* This automatically shows and destroys the dialog */
-void
-dialog_about(void);
-
 #endif /* __DIALOG_H */