diff --git a/src/ServiceProvider.php b/src/ServiceProvider.php
index 74b85f0..1ae46c3 100644
--- a/src/ServiceProvider.php
+++ b/src/ServiceProvider.php
@@ -33,7 +33,7 @@ public function boot()
             return;
         }
 
-        $this->app['events']->listen(function (QueryExecuted $query) {
+        $this->app['events']->listen(QueryExecuted::class, function (QueryExecuted $query) {
             if ($query->time < $this->app['config']->get('logging.query.slower_than', 0)) {
                 return;
             }