diff --git a/code/LeftAndMain.php b/code/LeftAndMain.php
index 48ff55c70..b3114d0b4 100644
--- a/code/LeftAndMain.php
+++ b/code/LeftAndMain.php
@@ -752,12 +752,15 @@ protected function init()
 
         // Assign default cms theme and replace user-specified themes
         SSViewer::set_themes(LeftAndMain::config()->uninherited('admin_themes'));
-
-        // Set the current reading mode
-        Versioned::set_stage(Versioned::DRAFT);
-
-        // Set default reading mode to suppress ?stage=Stage querystring params in CMS
-        Versioned::set_default_reading_mode(Versioned::get_reading_mode());
+        
+        // Check the presence of Silverstripe-Versioned module
+        if (class_exists(Versioned::class)) {
+            // Set the current reading mode
+            Versioned::set_stage(Versioned::DRAFT);
+            
+            // Set default reading mode to suppress ?stage=Stage querystring params in CMS
+            Versioned::set_default_reading_mode(Versioned::get_reading_mode());
+        }
     }
 
     public function handleRequest(HTTPRequest $request)