diff --git a/renderdocui/Windows/PixelHistoryView.cs b/renderdocui/Windows/PixelHistoryView.cs
index 9154e5e7f..acd13240a 100644
--- a/renderdocui/Windows/PixelHistoryView.cs
+++ b/renderdocui/Windows/PixelHistoryView.cs
@@ -398,12 +398,16 @@ namespace renderdocui.Windows
 
         private void UpdateEventList()
         {
-            if (modifications == null) return;
-
             events.BeginUpdate();
 
             events.Nodes.Clear();
 
+            if (modifications == null)
+            {
+                events.EndUpdate();
+                return;
+            }
+
             var frags = new List<TreelistView.Node>();
             var mods = new List<PixelModification>();