diff --git a/src/DetachableTabBar.h b/src/DetachableTabBar.h
index 34c0f562..9a751d18 100644
--- a/src/DetachableTabBar.h
+++ b/src/DetachableTabBar.h
@@ -1,40 +1,40 @@
 /*
     Copyright 2018 by Tomaz Canabrava <tcanabrava@kde.org>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 2 of the License, or
     (at your option) any later version.
 
     This program 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 General Public License for more details.
 
     You should have received a copy of the GNU General Public License
     along with this program; if not, write to the Free Software
     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
     02110-1301  USA.
 */
 
 #ifndef DETACHABLETABBAR_H
 #define DETACHABLETABBAR_H
 
 #include <QTabBar>
 #include <QCursor>
 
 class DetachableTabBar : public QTabBar {
     Q_OBJECT
 public:
-    DetachableTabBar(QWidget *parent = nullptr);
+    explicit DetachableTabBar(QWidget *parent = nullptr);
 Q_SIGNALS:
     void detachTab(int idx);
 protected:
     void mouseMoveEvent(QMouseEvent*event) override;
     void mouseReleaseEvent(QMouseEvent *event) override;
 private:
     bool _draggingOutside;
     QCursor _originalCursor;
 };
 
 #endif