diff --git a/ecal/core/src/registration/ecal_registration_provider.h b/ecal/core/src/registration/ecal_registration_provider.h
index 01851f9..253c38c 100644
--- a/ecal/core/src/registration/ecal_registration_provider.h
+++ b/ecal/core/src/registration/ecal_registration_provider.h
@@ -68,8 +68,8 @@ namespace eCAL
 
     void RegisterSendThread();
 
-    Registration::Sample CRegistrationProvider::GetProcessRegisterSample();
-    Registration::Sample CRegistrationProvider::GetProcessUnregisterSample();
+    Registration::Sample GetProcessRegisterSample();
+    Registration::Sample GetProcessUnregisterSample();
 
     static std::atomic<bool>            m_created;