diff --git a/Terminal.Gui/Core.cs b/Terminal.Gui/Core.cs
index 2cbdd80a5..9f0f397c4 100644
--- a/Terminal.Gui/Core.cs
+++ b/Terminal.Gui/Core.cs
@@ -1717,7 +1717,7 @@ namespace Terminal.Gui {
 
 			public override void Post (SendOrPostCallback d, object state)
 			{
-				mainLoop.AddIdle (() => { 
+				mainLoop.AddIdle (() => {
 					d (state);
 					return false;
 				});
diff --git a/Terminal.Gui/MonoCurses/mainloop.cs b/Terminal.Gui/MonoCurses/mainloop.cs
index 98ba8aca1..280c4dfee 100644
--- a/Terminal.Gui/MonoCurses/mainloop.cs
+++ b/Terminal.Gui/MonoCurses/mainloop.cs
@@ -354,8 +354,10 @@ namespace Mono.Terminal {
 		/// </summary>
 		public Func<bool> AddIdle (Func<bool> idleHandler)
 		{
-			lock (idleHandlers)
+			lock (idleHandlers) {
 				idleHandlers.Add (idleHandler);
+				driver.Wakeup ();
+			}
 			return idleHandler;
 		}