diff --git a/src/Avalonia.ReactiveUI/TransitioningContentControl.cs b/src/Avalonia.ReactiveUI/TransitioningContentControl.cs
index 2bbf87590e..d26e90b2da 100644
--- a/src/Avalonia.ReactiveUI/TransitioningContentControl.cs
+++ b/src/Avalonia.ReactiveUI/TransitioningContentControl.cs
@@ -57,7 +57,7 @@ namespace Avalonia.ReactiveUI
         
         /// <summary>
         /// TransitioningContentControl uses the default ContentControl 
-        /// template from Avalonia simple theme.
+        /// template from Avalonia default theme.
         /// </summary>
         Type IStyleable.StyleKey => typeof(ContentControl);