diff --git a/src/Spatie/Activitylog/Models/Activity.php b/src/Spatie/Activitylog/Models/Activity.php
index c0f5953..f9daf14 100644
--- a/src/Spatie/Activitylog/Models/Activity.php
+++ b/src/Spatie/Activitylog/Models/Activity.php
@@ -27,7 +27,7 @@ public function user()
 
     public function getAuthModelName()
     {
-        if (config('activitylog.user')) {
+        if (config('activitylog.userModel')) {
             return config('activitylog.userModel');
         }