diff --git a/uplink/configuration.py b/uplink/configuration.py
index 16d3b71..c964244 100644
--- a/uplink/configuration.py
+++ b/uplink/configuration.py
@@ -215,7 +215,7 @@ class Configuration:
         return self.__notification_gammu
 
     def get_notification_gammu_configuration_file(self):
-        return self.__notification_gammu_configuration
+        return self.__notification_gammu_configuration_file
 
     def get_notification_gammu_receiver(self):
         return self.__notification_gammu_receiver