diff --git a/test/cpp/util/proto_reflection_descriptor_database.h b/test/cpp/util/proto_reflection_descriptor_database.h
index eb7cf4907db..0e69696d5fb 100644
--- a/test/cpp/util/proto_reflection_descriptor_database.h
+++ b/test/cpp/util/proto_reflection_descriptor_database.h
@@ -45,6 +45,8 @@
 #include <grpc++/ext/reflection.grpc.pb.h>
 #endif  // GRPC_NO_GENERATED_CODE
 #include <grpc++/grpc++.h>
+#include <grpc++/impl/codegen/config_protobuf.h>
+
 namespace grpc {
 
 // ProtoReflectionDescriptorDatabase takes a stub of ServerReflection and