diff --git a/plugins/windows-notification/api/include/gobject/winrt-toast-notification.h b/plugins/windows-notification/api/include/gobject/winrt-toast-notification.h
index dfcb639c..eb5ccdf8 100644
--- a/plugins/windows-notification/api/include/gobject/winrt-toast-notification.h
+++ b/plugins/windows-notification/api/include/gobject/winrt-toast-notification.h
@@ -34,11 +34,11 @@ winrtWindowsUINotificationsToastNotification* winrt_windows_ui_notifications_toa
 void winrt_windows_ui_notifications_toast_notification_set_ExpiresOnReboot(winrtWindowsUINotificationsToastNotification* self, gboolean value);
 gboolean winrt_windows_ui_notifications_toast_notification_get_ExpiresOnReboot(winrtWindowsUINotificationsToastNotification* self);
 
-void winrt_windows_ui_notifications_toast_notification_set_Tag(winrtWindowsUINotificationsToastNotification* self, const gchar* value);
-gchar* winrt_windows_ui_notifications_toast_notification_get_Tag(winrtWindowsUINotificationsToastNotification* self);
+void winrt_windows_ui_notifications_toast_notification_SetTag(winrtWindowsUINotificationsToastNotification* self, const gchar* value);
+gchar* winrt_windows_ui_notifications_toast_notification_GetTag(winrtWindowsUINotificationsToastNotification* self);
 
-void winrt_windows_ui_notifications_toast_notification_set_Group(winrtWindowsUINotificationsToastNotification* self, const gchar* value);
-gchar* winrt_windows_ui_notifications_toast_notification_get_Group(winrtWindowsUINotificationsToastNotification* self);
+void winrt_windows_ui_notifications_toast_notification_SetGroup(winrtWindowsUINotificationsToastNotification* self, const gchar* value);
+gchar* winrt_windows_ui_notifications_toast_notification_GetGroup(winrtWindowsUINotificationsToastNotification* self);
 
 winrtEventToken* winrt_windows_ui_notifications_toast_notification_Activated(winrtWindowsUINotificationsToastNotification* self, NotificationCallbackActivated callback, void* context, void(*free)(void*));
 void winrt_windows_ui_notifications_toast_notification_RemoveActivated(winrtWindowsUINotificationsToastNotification* self, winrtEventToken* token);
diff --git a/plugins/windows-notification/api/src/gobject/winrt-toast-notification.cpp b/plugins/windows-notification/api/src/gobject/winrt-toast-notification.cpp
index c0018936..21404f16 100644
--- a/plugins/windows-notification/api/src/gobject/winrt-toast-notification.cpp
+++ b/plugins/windows-notification/api/src/gobject/winrt-toast-notification.cpp
@@ -194,7 +194,7 @@ gboolean winrt_windows_ui_notifications_toast_notification_get_ExpiresOnReboot(w
   return winrt_windows_ui_notifications_toast_notification_get_internal(self)->ExpiresOnReboot();
 }
 
-void winrt_windows_ui_notifications_toast_notification_set_Tag(winrtWindowsUINotificationsToastNotification* self, const char* value)
+void winrt_windows_ui_notifications_toast_notification_SetTag(winrtWindowsUINotificationsToastNotification* self, const char* value)
 {
   g_return_if_fail (WINRT_IS_WINDOWS_UI_NOTIFICATIONS_TOAST_NOTIFICATION (self));
 
@@ -202,21 +202,21 @@ void winrt_windows_ui_notifications_toast_notification_set_Tag(winrtWindowsUINot
 }
 
 /**
- * winrt_windows_ui_notifications_toast_notification_get_Tag:
+ * winrt_windows_ui_notifications_toast_notification_GetTag:
  * @manager: a #winrtWindowsUINotificationsToastNotification
  *
  * Returns the value of the tag
  * 
  * Returns: (transfer full): the value
  */
-char* winrt_windows_ui_notifications_toast_notification_get_Tag(winrtWindowsUINotificationsToastNotification* self)
+char* winrt_windows_ui_notifications_toast_notification_GetTag(winrtWindowsUINotificationsToastNotification* self)
 {
   g_return_val_if_fail (WINRT_IS_WINDOWS_UI_NOTIFICATIONS_TOAST_NOTIFICATION (self), FALSE);
 
   return wsview_to_char(winrt_windows_ui_notifications_toast_notification_get_internal(self)->Tag());
 }
 
-void winrt_windows_ui_notifications_toast_notification_set_Group(winrtWindowsUINotificationsToastNotification* self, const char* value)
+void winrt_windows_ui_notifications_toast_notification_SetGroup(winrtWindowsUINotificationsToastNotification* self, const char* value)
 {
   g_return_if_fail (WINRT_IS_WINDOWS_UI_NOTIFICATIONS_TOAST_NOTIFICATION (self));
 
@@ -224,14 +224,14 @@ void winrt_windows_ui_notifications_toast_notification_set_Group(winrtWindowsUIN
 }
 
 /**
- * winrt_windows_ui_notifications_toast_notification_get_Group:
+ * winrt_windows_ui_notifications_toast_notification_GetGroup:
  * @manager: a #winrtWindowsUINotificationsToastNotification
  *
  * Returns the value of the group
  * 
  * Returns: (transfer full): the value
  */
-char* winrt_windows_ui_notifications_toast_notification_get_Group(winrtWindowsUINotificationsToastNotification* self)
+char* winrt_windows_ui_notifications_toast_notification_GetGroup(winrtWindowsUINotificationsToastNotification* self)
 {
   g_return_val_if_fail (WINRT_IS_WINDOWS_UI_NOTIFICATIONS_TOAST_NOTIFICATION (self), FALSE);
 
diff --git a/plugins/windows-notification/vapi/winrt_windows_ui_notifications.vapi b/plugins/windows-notification/vapi/winrt_windows_ui_notifications.vapi
index 7902bc3c..9966b3b5 100644
--- a/plugins/windows-notification/vapi/winrt_windows_ui_notifications.vapi
+++ b/plugins/windows-notification/vapi/winrt_windows_ui_notifications.vapi
@@ -37,8 +37,6 @@ namespace winrt.Windows.UI.Notifications {
 	public class ToastNotification : GLib.Object {
 		public ToastNotification(string doc);
         public bool ExpiresOnReboot { get; set; }
-        public string Tag { get; set; } // TODO: check if valac is cleaning this string
-        public string Group { get; set; }
 
         public EventToken Activated(owned NotificationCallbackActivated handler);
         public void RemoveActivated(EventToken token);
@@ -48,6 +46,11 @@ namespace winrt.Windows.UI.Notifications {
 
         public EventToken Dismissed(owned NotificationCallbackDismissed handler);
         public void RemoveDismissed(EventToken token);
+        
+        public string GetTag();
+        public void SetTag(string tag);
+        public string GetGroup();
+        public void SetGroup(string group);
     }
 
     [CCode (type_id = "winrt_windows_ui_notifications_toast_notifier_get_type ()")]