diff --git a/src/SharpChat/SharpChatRoutes.php b/src/SharpChat/SharpChatRoutes.php
index 7b63f50..7da6ff0 100644
--- a/src/SharpChat/SharpChatRoutes.php
+++ b/src/SharpChat/SharpChatRoutes.php
@@ -79,7 +79,7 @@ final class SharpChatRoutes implements IRouteHandler {
         if($impersonator->isSuperUser())
             return true;
 
-        $whitelist = $impersonateConfig->getArray(sprintf('allow.u%s', $impersonator->getId()));
+        $whitelist = $this->impersonateConfig->getArray(sprintf('allow.u%s', $impersonator->getId()));
         return in_array($targetId, $whitelist, true);
     }