diff --git a/src/core/profile_io_data_qt.h b/src/core/profile_io_data_qt.h
index 3d9a5ef190b7ffb2220a4346aec2225cee5be50c..c9e73f7782f3f956608e98fda6887fb8008b1ebf 100644
--- a/src/core/profile_io_data_qt.h
+++ b/src/core/profile_io_data_qt.h
@@ -70,7 +70,7 @@ class ExtensionSystemQt;
 
 namespace QtWebEngineCore {
 
-class ClientCertificateStoreData;
+struct ClientCertificateStoreData;
 class ProfileIODataQt;
 class ProfileQt;