1 files changed, 1 insertions, 1 deletions
diff --git a/src/validationinterface.h b/src/validationinterface.h
index ac62f8b467..6b38655ff1 100644
--- a/src/validationinterface.h
+++ b/src/validationinterface.h
@@ -177,7 +177,7 @@ protected:
     friend class ValidationInterfaceTest;
 };
 
-struct MainSignalsInstance;
+class MainSignalsInstance;
 class CMainSignals {
 private:
     std::unique_ptr<MainSignalsInstance> m_internals;