diff --git a/code/LeftAndMain.php b/code/LeftAndMain.php
index 142519733..ec57dc225 100644
--- a/code/LeftAndMain.php
+++ b/code/LeftAndMain.php
@@ -45,6 +45,7 @@
 use SilverStripe\Model\ArrayData;
 use SilverStripe\View\Requirements;
 use SilverStripe\View\SSViewer;
+use SilverStripe\Dev\Deprecation;
 
 /**
  * LeftAndMain is the parent class of all the two-pane views in the CMS.