diff --git a/libgnucash/engine/mocks/gmock-Account.h b/libgnucash/engine/mocks/gmock-Account.h
index 04a48b5d80..608e11cad8 100644
--- a/libgnucash/engine/mocks/gmock-Account.h
+++ b/libgnucash/engine/mocks/gmock-Account.h
@@ -52,6 +52,7 @@ protected:
 };
 
 
+// mock up for GncImportMatchMap
 class GncMockImportMatchMap : public GncImportMatchMap
 {
 public: