diff --git a/Journaley/Forms/MainForm.cs b/Journaley/Forms/MainForm.cs
index a184b7e..fe6ab91 100644
--- a/Journaley/Forms/MainForm.cs
+++ b/Journaley/Forms/MainForm.cs
@@ -639,6 +639,11 @@ private void OnGetMinMaxInfo(ref Message m)
         /// </summary>
         private void UpdateWebBrowser()
         {
+            if (this.selectedEntry == null)
+            {
+                return;
+            }
+
             string initialString = this.SelectedEntry.EntryText;
 
             // Fix for backtick fenced code blocks is to replace it into tilde fenced.