Bug: https://bugs.gentoo.org/887001
--- a/menues.c
+++ b/menues.c
@@ -280,7 +280,7 @@ static void readQuadletApp(gpointer callback_data, guint callback_action,
 	gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog->dialog)->vbox),
 		table, TRUE, TRUE, 0);
 
-	transactionDialogAddOkClose(dialog, readQuadletAppOk);
+	transactionDialogAddOkClose(dialog, (GtkSignalFunc)readQuadletAppOk);
 
 	gtk_widget_show_all(dialog->dialog);
 }
@@ -336,7 +336,7 @@ static void writeQuadletApp(gpointer callback_data, guint callback_action,
 	gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog->dialog)->vbox),
 		table, TRUE, TRUE, 0);
 
-	transactionDialogAddOkClose(dialog, writeQuadletAppOk);
+	transactionDialogAddOkClose(dialog, (GtkSignalFunc)writeQuadletAppOk);
 
 	gtk_widget_show_all(dialog->dialog);
 }
@@ -417,7 +417,7 @@ static void readBlockApp(gpointer callback_data, guint callback_action,
 		table, TRUE, TRUE, 0);
 
 	//dialogAddOkClose(dialog->dialog, readBlockAppOk);
-	transactionDialogAddOkClose(dialog, readBlockAppOk);
+	transactionDialogAddOkClose(dialog, (GtkSignalFunc)readBlockAppOk);
 
 	gtk_widget_show_all(dialog->dialog);
 }