diff --git a/src/caosdb/connection.cpp b/src/caosdb/connection.cpp
index 4a780750451d2fa72f3d88f31b7170bba2a09e1f..2dff753b661de94d7df87dbba7921ed7b816bada 100644
--- a/src/caosdb/connection.cpp
+++ b/src/caosdb/connection.cpp
@@ -35,7 +35,7 @@
 #include "grpcpp/impl/codegen/status_code_enum.h" // for StatusCode, UNAUTH...
 namespace grpc {
 class Channel;
-}
+} // namespace grpc
 
 namespace caosdb::connection {
 using caosdb::authentication::Authenticator;