1 files changed, 1 insertions, 0 deletions
diff --git a/Juick/Controls/HyperLinkRichTextBox.cs b/Juick/Controls/HyperLinkRichTextBox.cs
index 6ec6883..29b44c9 100644
--- a/Juick/Controls/HyperLinkRichTextBox.cs
+++ b/Juick/Controls/HyperLinkRichTextBox.cs
@@ -27,6 +27,7 @@ namespace Juick.Controls
         {
             var richTextBox = (HyperLinkRichTextBox)dependencyObject;
             var stringValue = (string)dependencyPropertyChangedEventArgs.NewValue;
+            if (string.IsNullOrEmpty(stringValue)) return;
             var paragraph = new Paragraph();
 
             var index = 0;