diff --git a/resources/ews/ewsclient/auth/ewsabstractauth.cpp b/resources/ews/ewsclient/auth/ewsabstractauth.cpp
index 1c70fd94d..0f2154043 100644
--- a/resources/ews/ewsclient/auth/ewsabstractauth.cpp
+++ b/resources/ews/ewsclient/auth/ewsabstractauth.cpp
@@ -1,35 +1,35 @@
 /*
     Copyright (C) 2018 Krzysztof Nowicki <krissn@op.pl>
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
 
     This library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Library General Public License for more details.
 
     You should have received a copy of the GNU Library General Public License
     along with this library; see the file COPYING.LIB.  If not, write to
     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA 02110-1301, USA.
 */
 
 #include "ewsabstractauth.h"
 
 EwsAbstractAuth::EwsAbstractAuth(QObject *parent)
-    : QObject(parent)
+    : QObject(parent), mAuthParentWidget(nullptr)
 {
 }
 
 void EwsAbstractAuth::setAuthParentWidget(QWidget *widget)
 {
     mAuthParentWidget = widget;
 }
 
 void EwsAbstractAuth::notifyRequestAuthFailed()
 {
     Q_EMIT requestAuthFailed();
 }