diff --git a/kratos/testing/testing.h b/kratos/testing/testing.h
index d43e9d4abe81..7c400896266b 100644
--- a/kratos/testing/testing.h
+++ b/kratos/testing/testing.h
@@ -26,6 +26,6 @@
 namespace Kratos::Testing 
 {
 
-DataCommunicator& KRATOS_API(KRATOS_CORE) GetDefaultDataCommunicator();
+KRATOS_API(KRATOS_CORE) DataCommunicator& GetDefaultDataCommunicator();
 
 }