diff --git a/src/openrct2-ui/scripting/CustomWindow.cpp b/src/openrct2-ui/scripting/CustomWindow.cpp
index 6b00b7fc91..b7dac7135b 100644
--- a/src/openrct2-ui/scripting/CustomWindow.cpp
+++ b/src/openrct2-ui/scripting/CustomWindow.cpp
@@ -577,9 +577,10 @@ namespace OpenRCT2::Ui::Windows
                 }
                 widget_invalidate(w, WIDX_TAB_0 + w->page);
             }
-            InvokeEventHandler(info.Owner, info.Desc.OnUpdate);
         }
 
+        InvokeEventHandler(info.Owner, info.Desc.OnUpdate);
+
         // Since the plugin may alter widget positions and sizes during an update event,
         // we need to force an update for all list view scrollbars
         rct_widgetindex widgetIndex = 0;