diff --git a/src/Avalonia.Controls/TextBlock.cs b/src/Avalonia.Controls/TextBlock.cs
index db144df4f8..925501e913 100644
--- a/src/Avalonia.Controls/TextBlock.cs
+++ b/src/Avalonia.Controls/TextBlock.cs
@@ -710,6 +710,8 @@ namespace Avalonia.Controls
 
             if (HasComplexContent)
             {
+                VisualChildren.Clear();
+
                 var textRuns = new List<TextRun>();
 
                 foreach (var inline in inlines!)