diff --git a/gtk3/check_menu_radio_group.c b/gtk3/check_menu_radio_group.c
new file mode 100644
index 0000000..3f4c9d2
--- /dev/null
+++ b/gtk3/check_menu_radio_group.c
@@ -0,0 +1,79 @@
+#include "check_menu_radio_group.h"
+
+void check_menu_item_group_handler(GtkCheckMenuItem *item, CheckMenuItemGroupHandlerData *data) {
+	bool cancel = false;
+
+	if (data->handler) {
+		cancel = data->handler(GTK_WIDGET(item), (gpointer) data->arg);
+	}
+
+	GValue value = G_VALUE_INIT;
+	g_value_init(&value, G_TYPE_BOOLEAN);
+
+	if (cancel) {
+		g_value_set_boolean(&value, false);
+		g_object_set_property(G_OBJECT(item), "active", &value);
+	}
+	else {
+		for (unsigned i = 0; i < data->group->count; i++) {
+			GtkCheckMenuItem *cur = GTK_CHECK_MENU_ITEM(data->group->items[i]);
+			g_value_set_boolean(&value, cur == item);
+			g_object_set_property(G_OBJECT(cur), "active", &value);
+		}
+	}
+}
+
+CheckMenuItemGroup *check_menu_item_group_new(char **names, char **args) {
+	unsigned name_count = 0;
+
+	if (names != NULL) {
+		for (char **ptr = names; *ptr != NULL; ptr++, name_count++);
+	}
+
+	CheckMenuItemGroup *group = g_malloc0(sizeof(CheckMenuItemGroup));
+	group->count    = name_count;
+	group->items    = g_malloc0(sizeof(GtkWidget*) * name_count);
+	group->handlers = g_malloc0(sizeof(CheckMenuItemGroupHandlerData*) * name_count);
+
+	for (unsigned i = 0; i < name_count; i++) {
+		group->items[i] = gtk_check_menu_item_new_with_label(names[i]);
+
+		group->handlers[i] = g_malloc0(sizeof(CheckMenuItemGroupHandlerData));
+		group->handlers[i]->group = group;
+		group->handlers[i]->arg = args[i];
+		g_signal_connect(group->items[i], "toggled", G_CALLBACK(check_menu_item_group_handler), group->handlers[i]);
+
+		gtk_check_menu_item_set_draw_as_radio(GTK_CHECK_MENU_ITEM(group->items[i]), true);
+	}
+
+	return group;
+}
+
+void check_menu_item_group_activate(CheckMenuItemGroup *group, char *arg) {
+	GValue value = G_VALUE_INIT;
+	g_value_init(&value, G_TYPE_BOOLEAN);
+	g_value_set_boolean(&value, false);
+
+	for (unsigned i = 0; i < group->count; i++) {
+		GtkCheckMenuItem *cur = GTK_CHECK_MENU_ITEM(group->items[i]);
+		
+		if (g_strcmp0(arg, group->handlers[i]->arg) == 0) {
+			gtk_check_menu_item_set_active(cur, true);
+		}
+		else {
+			g_object_set_property(G_OBJECT(cur), "active", &value);
+		}
+	}
+}
+
+void check_menu_item_group_connect_toggle_signal(CheckMenuItemGroup *group, bool (*handler)(GtkWidget *, gpointer)) {
+	for (unsigned i = 0; i < group->count; i++) {
+		group->handlers[i]->handler = handler;
+	}
+}
+
+void check_menu_item_group_insert_into_menu_shell(CheckMenuItemGroup *group, GtkMenuShell *menu_shell, gint position) {
+	for (unsigned i = 0; i < group->count; i++) {
+		gtk_menu_shell_insert(menu_shell, group->items[i], position + i);
+	}
+}
diff --git a/gtk3/check_menu_radio_group.h b/gtk3/check_menu_radio_group.h
new file mode 100644
index 0000000..de12df9
--- /dev/null
+++ b/gtk3/check_menu_radio_group.h
@@ -0,0 +1,24 @@
+#ifndef check_menu_radio_group_h
+#define check_menu_radio_group_h
+
+#include <stdbool.h>
+#include <gtk/gtk.h>
+
+typedef struct CheckMenuItemGroupHandlerData {
+	struct CheckMenuItemGroup *group;
+	char *arg;
+	bool (*handler)(GtkWidget *, void *);
+} CheckMenuItemGroupHandlerData;
+
+typedef struct CheckMenuItemGroup {
+	unsigned count;
+	GtkWidget **items;
+	CheckMenuItemGroupHandlerData **handlers;
+} CheckMenuItemGroup;
+
+CheckMenuItemGroup *check_menu_item_group_new(char **names, char **args);
+void check_menu_item_group_activate(CheckMenuItemGroup *group, char *arg);
+void check_menu_item_group_connect_toggle_signal(CheckMenuItemGroup *group, bool (*handler)(GtkWidget *, gpointer));
+void check_menu_item_group_insert_into_menu_shell(CheckMenuItemGroup *group, GtkMenuShell *menu_shell, gint position);
+
+#endif
\ No newline at end of file
diff --git a/gtk3/main.c b/gtk3/main.c
index bcd01a7..4b820f5 100644
--- a/gtk3/main.c
+++ b/gtk3/main.c
@@ -11,6 +11,7 @@
 
 #include "settings.h"
 #include "shader.h"
+#include "check_menu_radio_group.h"
 
 // used for audio and game controllers
 #include "SDL.h"
@@ -822,20 +823,22 @@ GtkWidget *menubar_to_menu(GtkMenuBar *menubar) {
 // environments and the manual call of `g_signal_connect` was needed anyway
 // because the UI definition can’t define string arguments for signal handlers.
 static void create_model_menu_items() {
-	void on_change_model(GtkCheckMenuItem *check_menu_item, const gchar *model_str);
+	bool on_change_model(GtkWidget *, gpointer);
 
 	static const char *const model_names[] = {
 		"Game Boy",
 		"Super Game Boy",
 		"Game Boy Color",
-		"Game Boy Advance"
+		"Game Boy Advance",
+		NULL
 	};
 
 	static const char *const model_codes[] = {
 		"DMG",
 		"SGB",
 		"CGB",
-		"GBA"
+		"GBA",
+		NULL
 	};
 
 	// Find the menu item index of the previous sibling of the new menu items
@@ -844,48 +847,27 @@ static void create_model_menu_items() {
 	g_autoptr(GList) list = gtk_container_get_children(parent);
 	gint position = g_list_index(list, before);
 
-	GSList *group = NULL;
-	for (int i = 0; i < sizeof(model_names) / sizeof(const char*); i++) {
-		// Create a new menu item
-		GtkWidget *item = gtk_radio_menu_item_new_with_label(group, model_names[i]);
-
-		// Add it to the existing menu
-		gtk_menu_shell_insert(GTK_MENU_SHELL(parent), item, ++position);
-		g_signal_connect(item, "toggled", G_CALLBACK(on_change_model), (gpointer) model_codes[i]);
-
-		if (g_strcmp0(config.emulation.model, model_codes[i]) == 0) {
-			gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(item), true);
-		}
-
-		if (i == 0) group = gtk_radio_menu_item_get_group(GTK_RADIO_MENU_ITEM(item));
-	}
+	CheckMenuItemGroup *model_group = check_menu_item_group_new((char **) model_names, (char **) model_codes);
+	check_menu_item_group_insert_into_menu_shell(model_group, GTK_MENU_SHELL(parent), position + 1);
+	check_menu_item_group_connect_toggle_signal(model_group, on_change_model);
+	check_menu_item_group_activate(model_group, config.emulation.model);
 
 	static const char *const peripheral_names[] = {
 		"None",
 		"Game Boy Printer",
+		NULL
 	};
 
 	static const char *const peripheral_codes[] = {
 		"NONE",
 		"PRINTER",
+		NULL,
 	};
 
-	GtkMenuShell *link_menu = builder_get(GTK_MENU_SHELL, "link_menu");
-	group = NULL;
-	position = 0;
-	for (int i = 0; i < sizeof(peripheral_names) / sizeof(const char*); i++) {
-		// Create a new menu item
-		GtkWidget *item = gtk_radio_menu_item_new_with_label(group, peripheral_names[i]);
-
-		// Add it to the existing menu
-		gtk_menu_shell_insert(link_menu, item, position++);
-		// g_signal_connect(item, "toggled", G_CALLBACK(on_change_linked_device, (gpointer) peripheral_codes[i]);
-
-		if (i == 0) {
-			group = gtk_radio_menu_item_get_group(GTK_RADIO_MENU_ITEM(item));
-			gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(item), true);
-		}
-	}
+	CheckMenuItemGroup *link_group = check_menu_item_group_new((char **) peripheral_names, (char **) peripheral_codes);
+	check_menu_item_group_insert_into_menu_shell(link_group, GTK_MENU_SHELL(builder_get(GTK_MENU_SHELL, "link_menu")), 0);
+	// check_menu_item_group_connect_toggle_signal(link_group, on_change_linked_device);
+	check_menu_item_group_activate(link_group, "NONE");
 }
 
 // Create our application’s menu.
@@ -2100,9 +2082,18 @@ G_MODULE_EXPORT void on_quit_activate(GtkWidget *w, gpointer user_data_ptr) {
 	quit();
 }
 
-G_MODULE_EXPORT void on_change_model(GtkCheckMenuItem *check_menu_item, const gchar *model_str) {
-	if (!GB_is_inited(&gb) || !gtk_check_menu_item_get_active(check_menu_item)) {
-		return;
+bool on_change_model(GtkWidget *widget, gpointer user_data) {
+	GtkCheckMenuItem *check_menu_item = GTK_CHECK_MENU_ITEM(widget);
+	gchar *model_str = (gchar *) user_data;
+
+	if (!gtk_check_menu_item_get_active(check_menu_item)) {
+		return true;
+	}
+	else if (!GB_is_inited(&gb)) {
+		gui_data.cli_options.model = -1;
+		config.emulation.model = g_strdup(model_str);
+
+		return false;
 	}
 
 	GtkMessageDialog *dialog = GTK_MESSAGE_DIALOG(gtk_message_dialog_new(
@@ -2121,8 +2112,6 @@ G_MODULE_EXPORT void on_change_model(GtkCheckMenuItem *check_menu_item, const gc
 			// Reset the CLI model override
 			gui_data.cli_options.model = -1;
 
-			// g_simple_action_set_state(action, value);
-			
 			g_free(config.emulation.model);
 			config.emulation.model = g_strdup(model_str);
 
@@ -2135,6 +2124,8 @@ G_MODULE_EXPORT void on_change_model(GtkCheckMenuItem *check_menu_item, const gc
 
 	run();
 	gtk_widget_destroy(GTK_WIDGET(dialog));
+
+	return result != GTK_RESPONSE_YES;
 }
 
 static void connect_signal_handlers(GApplication *app) {