diff --git a/custom3dinputhandler.cpp b/custom3dinputhandler.cpp
index dbba0d91..1acb96bf 100644
--- a/custom3dinputhandler.cpp
+++ b/custom3dinputhandler.cpp
@@ -1,4 +1,5 @@
 #include "custom3dinputhandler.h"
+// required only with Qt5 build
 #include <QtMath>
 Custom3DInputHandler::Custom3DInputHandler(QAbstract3DGraph *graph)
     : Q3DInputHandler(graph), m_isRightDragging(false), m_graphRef(graph) {
@@ -28,7 +29,6 @@ void Custom3DInputHandler::mousePressEvent(QMouseEvent *event, const QPoint &mou
                              mappedButton, mappedButtons, event->modifiers());
 #endif
     Q3DInputHandler::mousePressEvent(&customEvent, mousePos);
-    Q3DInputHandler::mousePressEvent(&customEvent, mousePos);
 }
 
 void Custom3DInputHandler::mouseReleaseEvent(QMouseEvent *event, const QPoint &mousePos) {
@@ -51,7 +51,6 @@ void Custom3DInputHandler::mouseReleaseEvent(QMouseEvent *event, const QPoint &m
     QMouseEvent customEvent(event->type(), event->localPos(), event->globalPos(),
                              mappedButton, mappedButtons, event->modifiers());
 #endif
-    Q3DInputHandler::mousePressEvent(&customEvent, mousePos);
     Q3DInputHandler::mouseReleaseEvent(&customEvent, mousePos);
 }