dialog = gtk_message_dialog_new(GTK_WINDOW(main_wnd),
                                        GTK_DIALOG_DESTROY_WITH_PARENT,
                                        GTK_MESSAGE_INFO,
-                                       GTK_BUTTONS_CLOSE, intro_text);
+                                       GTK_BUTTONS_CLOSE, "%s", intro_text);
        g_signal_connect_swapped(GTK_OBJECT(dialog), "response",
                                 G_CALLBACK(gtk_widget_destroy),
                                 GTK_OBJECT(dialog));
        dialog = gtk_message_dialog_new(GTK_WINDOW(main_wnd),
                                        GTK_DIALOG_DESTROY_WITH_PARENT,
                                        GTK_MESSAGE_INFO,
-                                       GTK_BUTTONS_CLOSE, about_text);
+                                       GTK_BUTTONS_CLOSE, "%s", about_text);
        g_signal_connect_swapped(GTK_OBJECT(dialog), "response",
                                 G_CALLBACK(gtk_widget_destroy),
                                 GTK_OBJECT(dialog));
        dialog = gtk_message_dialog_new(GTK_WINDOW(main_wnd),
                                        GTK_DIALOG_DESTROY_WITH_PARENT,
                                        GTK_MESSAGE_INFO,
-                                       GTK_BUTTONS_CLOSE, license_text);
+                                       GTK_BUTTONS_CLOSE, "%s", license_text);
        g_signal_connect_swapped(GTK_OBJECT(dialog), "response",
                                 G_CALLBACK(gtk_widget_destroy),
                                 GTK_OBJECT(dialog));