diff --git a/src/Uno.UWP/UI/Core/WeakEventHelper.cs b/src/Uno.UWP/UI/Core/WeakEventHelper.cs
index 478d1f660eae..9803c412b2dc 100644
--- a/src/Uno.UWP/UI/Core/WeakEventHelper.cs
+++ b/src/Uno.UWP/UI/Core/WeakEventHelper.cs
@@ -75,12 +75,11 @@ private bool Trim()
 			{
 				lock (_lock)
 				{
-					for (int i = 0; i < _handlers.Count; i++)
+					for (int i = _handlers.Count - 1; i >= 0; i--)
 					{
 						if (!_handlers[i].Target.IsAlive)
 						{
 							_handlers.RemoveAt(i);
-							i--;
 						}
 					}