diff --git a/code/Proxy/SSViewerProxy.php b/code/Proxy/SSViewerProxy.php
index 7e8892f..0d33c2d 100644
--- a/code/Proxy/SSViewerProxy.php
+++ b/code/Proxy/SSViewerProxy.php
@@ -141,6 +141,10 @@ protected static function trackTemplateUsed($templateName)
      */
     protected static function normalizeTemplateName($templateName)
     {
+        // Fallback for if the templateName is not a string or array (or anything, really)
+        if (!$templateName) {
+            $templateName = '';
+        }
         return str_ireplace(BASE_PATH, '', $templateName);
     }
 }