diff --git a/sapl/materia/apps.py b/sapl/materia/apps.py
index 3ac053d1b..883109d31 100644
--- a/sapl/materia/apps.py
+++ b/sapl/materia/apps.py
@@ -6,3 +6,6 @@ class AppConfig(apps.AppConfig):
     name = 'sapl.materia'
     label = 'materia'
     verbose_name = _('Matéria')
+
+    def ready(self):
+        from . import receivers
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