diff --git a/uget/configure.ac b/uget/configure.ac

index b8ef521..2b296f7 100644

--- a/uget/configure.ac

+++ b/uget/configure.ac

@@ -39,7 +39,7 @@ AM_GLIB_DEFINE_LOCALEDIR(LOCALEDIR)

 ## ----------------------------------------------

 ## checks for requirements.

-PKG_CHECK_MODULES(GTK, gtk+-2.0 >= 2.18)

+PKG_CHECK_MODULES(GTK, gtk+-2.0 >= 2.16)

 PKG_CHECK_MODULES(GLIB, glib-2.0 >= 2.22)

 PKG_CHECK_MODULES(GTHREAD, gthread-2.0)

 PKG_CHECK_MODULES(GMODULE, gmodule-2.0)

diff --git a/uget/uget-gtk/ug_category_form.c b/uget/uget-gtk/ug_category_form.c

index 738dc79..8fc016c 100644

--- a/uget/uget-gtk/ug_category_form.c

+++ b/uget/uget-gtk/ug_category_form.c

@@ -97,7 +97,7 @@ void	ug_category_form_get  (UgCategoryForm*  cform, UgCategoryGtk* category)

 {

 //	category = category->queuing;		// ug_category_dialog_get() has do this

-	if (gtk_widget_is_sensitive (cform->name_entry) == TRUE)

+	if (GTK_WIDGET_IS_SENSITIVE (cform->name_entry) == TRUE)

 		ug_str_set (&category->name, gtk_entry_get_text ((GtkEntry*) cform->name_entry), -1);

 	category->limit.active = gtk_spin_button_get_value_as_int ((GtkSpinButton*) cform->spin_active);

 	// Finished

@@ -110,7 +110,7 @@ void	ug_category_form_set  (UgCategoryForm*  cform, UgCategoryGtk* category)

 {

 //	category = category->queuing;		// ug_category_dialog_get() has do this

-	if (gtk_widget_is_sensitive (cform->name_entry) == TRUE)

+	if (GTK_WIDGET_IS_SENSITIVE (cform->name_entry) == TRUE)

 		gtk_entry_set_text ((GtkEntry*) cform->name_entry, (category->name) ? category->name : "");

 	gtk_spin_button_set_value ((GtkSpinButton*) cform->spin_active, (gdouble) category->limit.active);

 	// Finished

diff --git a/uget/uget-gtk/ug_download_dialog.c b/uget/uget-gtk/ug_download_dialog.c

index c4090d6..a45bc9d 100644

--- a/uget/uget-gtk/ug_download_dialog.c

+++ b/uget/uget-gtk/ug_download_dialog.c

@@ -362,7 +362,7 @@ static void	on_dialog_show (GtkWidget *widget, UgDownloadDialog* ddialog)

 		gtk_window_set_focus ((GtkWindow*) ddialog->self,

 				(GtkWidget*) ddialog->selector.notebook);

 	}

-	else if (gtk_widget_is_sensitive (ddialog->download.url_entry)) {

+	else if (GTK_WIDGET_IS_SENSITIVE (ddialog->download.url_entry)) {

 		gtk_window_set_focus ((GtkWindow*) ddialog->self,

 				(GtkWidget*) ddialog->download.url_entry);

 	}

diff --git a/uget/uget-gtk/ug_download_form.c b/uget/uget-gtk/ug_download_form.c

index dcdba9c..b3cc8d2 100644

--- a/uget/uget-gtk/ug_download_form.c

+++ b/uget/uget-gtk/ug_download_form.c

@@ -310,7 +310,7 @@ void	ug_download_form_get  (UgDownloadForm* dform, UgDataset* dataset)

 	ug_str_set (&common->password, gtk_entry_get_text ((GtkEntry*)dform->password_entry), -1);

 	common->retry_limit = gtk_spin_button_get_value_as_int ((GtkSpinButton*) dform->spin_retry);

 	common->retry_delay = gtk_spin_button_get_value_as_int ((GtkSpinButton*) dform->spin_delay);

-	if (gtk_widget_is_sensitive (dform->url_entry) == TRUE) {

+	if (GTK_WIDGET_IS_SENSITIVE (dform->url_entry) == TRUE) {

 		ug_str_set (&common->url,  gtk_entry_get_text ((GtkEntry*)dform->url_entry),  -1);

 		ug_str_set (&common->file, gtk_entry_get_text ((GtkEntry*)dform->file_entry), -1);

 		if (common->url) {

@@ -353,7 +353,7 @@ void	ug_download_form_get  (UgDownloadForm* dform, UgDataset* dataset)

 	}

 	// UgRelation

-	if (gtk_widget_get_sensitive (dform->radio_pause)) {

+	if (GTK_WIDGET_SENSITIVE (dform->radio_pause)) {

 		relation = ug_dataset_realloc (dataset, UgRelationGtkClass, 0);

 		if (gtk_toggle_button_get_active ((GtkToggleButton*) dform->radio_pause))

 			relation->hints |=  UG_HINT_PAUSED;

@@ -386,13 +386,13 @@ void	ug_download_form_set (UgDownloadForm* dform, UgDataset* dataset, gboolean k

 	}

 	// set data

 	if (keep_changed==FALSE || dform->changed.url==FALSE) {

-		if (gtk_widget_is_sensitive (dform->url_entry)) {

+		if (GTK_WIDGET_IS_SENSITIVE (dform->url_entry)) {

 			gtk_entry_set_text ((GtkEntry*) dform->url_entry,

 					(common && common->url)  ? common->url  : "");

 		}

 	}

 	if (keep_changed==FALSE || dform->changed.file==FALSE) {

-		if (gtk_widget_is_sensitive (dform->file_entry)) {

+		if (GTK_WIDGET_IS_SENSITIVE (dform->file_entry)) {

 			gtk_entry_set_text ((GtkEntry*) dform->file_entry,

 					(common && common->file) ? common->file : "");

 			// set changed flags

@@ -443,7 +443,7 @@ void	ug_download_form_set (UgDownloadForm* dform, UgDataset* dataset, gboolean k

 	}

 	// UgRelation

-	if (gtk_widget_get_sensitive (dform->radio_pause)) {

+	if (GTK_WIDGET_SENSITIVE (dform->radio_pause)) {

 		relation = ug_dataset_realloc (dataset, UgRelationGtkClass, 0);

 		if (relation->hints & UG_HINT_PAUSED)

 			gtk_toggle_button_set_active ((GtkToggleButton*) dform->radio_pause, TRUE);

@@ -571,7 +571,7 @@ void	ug_download_form_complete_entry (UgDownloadForm* dform)

 		// status

 		completed = TRUE;

 	}

-	else if (gtk_widget_is_sensitive (dform->url_entry) == FALSE)

+	else if (GTK_WIDGET_IS_SENSITIVE (dform->url_entry) == FALSE)

 		completed = TRUE;

 	else

 		completed = FALSE;

diff --git a/uget/uget-gtk/uget-gtk-callback.c b/uget/uget-gtk/uget-gtk-callback.c

index ccaff24..2e2a44e 100644

--- a/uget/uget-gtk/uget-gtk-callback.c

+++ b/uget/uget-gtk/uget-gtk-callback.c

@@ -236,7 +236,7 @@ static void	on_create_download (GtkWidget* widget, UgetGtk* ugtk)

 	title = g_strconcat (UGET_GTK_NAME " - ", _("New Download"), NULL);

 	ddialog = ug_download_dialog_new (title, ugtk->window.self);

 	g_free (title);

-	if (gtk_widget_get_visible ((GtkWidget*) ugtk->window.self) == FALSE)

+	if (GTK_WIDGET_VISIBLE ((GtkWidget*) ugtk->window.self) == FALSE)

 		gtk_window_set_transient_for ((GtkWindow*) ddialog->self, NULL);

 	ug_download_dialog_set_category (ddialog, &ugtk->category);

 	ug_download_form_set_folder_list (&ddialog->download,

@@ -290,7 +290,7 @@ static void	on_create_from_clipboard (GtkWidget* widget, UgetGtk* ugtk)

 	title = g_strconcat (UGET_GTK_NAME " - ", _("New from Clipboard"), NULL);

 	ddialog = ug_download_dialog_new (title, ugtk->window.self);

 	g_free (title);

-	if (gtk_widget_get_visible ((GtkWidget*) ugtk->window.self) == FALSE)

+	if (GTK_WIDGET_VISIBLE ((GtkWidget*) ugtk->window.self) == FALSE)

 		gtk_window_set_transient_for ((GtkWindow*) ddialog->self, NULL);

 	ug_download_dialog_set_category (ddialog, &ugtk->category);

 	ug_download_dialog_use_selector (ddialog);

@@ -1129,7 +1129,7 @@ void	on_about (GtkWidget* widget, UgetGtk* ugtk)

 //

 static void	on_tray_icon_activate (GtkStatusIcon* status_icon, UgetGtk* ugtk)

 {

-	if (gtk_widget_get_visible ((GtkWidget*) ugtk->window.self) == TRUE) {

+	if (GTK_WIDGET_VISIBLE ((GtkWidget*) ugtk->window.self) == TRUE) {

 		// get position and size

 		gtk_window_get_position (ugtk->window.self,

 				&ugtk->setting.window.x, &ugtk->setting.window.y);

diff --git a/uget/uget-gtk/uget-gtk-timeout.c b/uget/uget-gtk/uget-gtk-timeout.c

index 4d1fb4d..153db8c 100644

--- a/uget/uget-gtk/uget-gtk-timeout.c

+++ b/uget/uget-gtk/uget-gtk-timeout.c

@@ -316,7 +316,7 @@ static gboolean	uget_gtk_timeout_ipc (UgetGtk* ugtk)

 	// If no argument, program presents main window to the user.

 	if (args->len == 1) {

 		ug_arg_free (args, TRUE);

-		if (gtk_widget_get_visible ((GtkWidget*) ugtk->window.self) == FALSE)

+		if (GTK_WIDGET_VISIBLE ((GtkWidget*) ugtk->window.self) == FALSE)

 			gtk_window_deiconify (ugtk->window.self);

 		gtk_window_present (ugtk->window.self);

 		return TRUE;

diff --git a/uget/uget-gtk/uget-gtk.c b/uget/uget-gtk/uget-gtk.c

index 22a4c20..0af509e 100644

--- a/uget/uget-gtk/uget-gtk.c

+++ b/uget/uget-gtk/uget-gtk.c

@@ -280,7 +280,7 @@ void	uget_gtk_get_setting (UgetGtk* ugtk, UgetGtkSetting* setting)

 	GdkWindowState	gdk_wstate;

 	// get window position, size, and maximzied state

-	if (gtk_widget_get_visible (GTK_WIDGET (ugtk->window.self)) == TRUE) {

+	if (GTK_WIDGET_VISIBLE (GTK_WIDGET (ugtk->window.self)) == TRUE) {

 		gdk_wstate = gdk_window_get_state (GTK_WIDGET (ugtk->window.self)->window);

 		if (gdk_wstate & GDK_WINDOW_STATE_MAXIMIZED)

 			setting->window.maximized = TRUE;

diff --git a/uget/uget-gtk/uget-gtk.h b/uget/uget-gtk/uget-gtk.h

index 3ea3d23..383f9ee 100644

--- a/uget/uget-gtk/uget-gtk.h

+++ b/uget/uget-gtk/uget-gtk.h

@@ -44,6 +44,10 @@

 #include <ug_category-gtk.h>

 #include <ug_category_widget.h>

+#ifndef gtk_widget_set_visible /* gtk <=2.16 compatibility */

+#define gtk_widget_set_visible(widget, visible)     { if (visible) gtk_widget_show(widget); else gtk_widget_hide(widget); }

+#endif

+

 #ifdef __cplusplus

 extern "C" {

 #endif