diff -p -up pioneers-0.12.3/common/gtk/common_gtk.c.format-strings pioneers-0.12.3/common/gtk/common_gtk.c
--- pioneers-0.12.3/common/gtk/common_gtk.c.format-strings	2007-05-13 23:04:57.000000000 +0200
+++ pioneers-0.12.3/common/gtk/common_gtk.c	2010-01-25 15:45:19.000000000 +0100
@@ -315,7 +315,7 @@ void check_victory_points(GameParams * p
 	dialog = gtk_message_dialog_new(main_window,
 					GTK_DIALOG_DESTROY_WITH_PARENT,
 					message_type,
-					GTK_BUTTONS_OK, win_message);
+					GTK_BUTTONS_OK, "%s", win_message);
 
 	gtk_message_dialog_format_secondary_text
 	    (GTK_MESSAGE_DIALOG(dialog), "%s", point_specification);