diff --git a/AdvancedDockingSystem/include/ads/Internal.h b/AdvancedDockingSystem/include/ads/Internal.h
index b97e838..7a1acf1 100644
--- a/AdvancedDockingSystem/include/ads/Internal.h
+++ b/AdvancedDockingSystem/include/ads/Internal.h
@@ -6,7 +6,7 @@
 
 #include "ads/API.h"
 
-#if QT_VERSION >= 0x050000
+#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
 #else
 #include "ads/SectionContent.h"
 #endif
diff --git a/AdvancedDockingSystem/src/ContainerWidget.cpp b/AdvancedDockingSystem/src/ContainerWidget.cpp
index 1fc51dd..918c80e 100644
--- a/AdvancedDockingSystem/src/ContainerWidget.cpp
+++ b/AdvancedDockingSystem/src/ContainerWidget.cpp
@@ -99,7 +99,7 @@ SectionWidget* ContainerWidget::addSectionContent(const SectionContent::RefPtr&
 	data.titleWidget = new SectionTitleWidget(sc, NULL);
 	data.contentWidget = new SectionContentWidget(sc, NULL);
 
-#if QT_VERSION >= 0x050000
+#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
 	QObject::connect(data.titleWidget, &SectionTitleWidget::activeTabChanged, this, &ContainerWidget::onActiveTabChanged);
 #else
 	QObject::connect(data.titleWidget, SIGNAL(activeTabChanged()), this, SLOT(onActiveTabChanged()));
@@ -308,7 +308,7 @@ QMenu* ContainerWidget::createContextMenu() const
 			a->setProperty("type", "section");
 			a->setCheckable(true);
 			a->setChecked(true);
-#if QT_VERSION >= 0x050000
+#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
 			QObject::connect(a, &QAction::toggled, this, &ContainerWidget::onActionToggleSectionContentVisibility);
 #else
 			QObject::connect(a, SIGNAL(toggled(bool)), this, SLOT(onActionToggleSectionContentVisibility(bool)));
@@ -330,7 +330,7 @@ QMenu* ContainerWidget::createContextMenu() const
 		a->setProperty("type", "section");
 		a->setCheckable(true);
 		a->setChecked(false);
-#if QT_VERSION >= 0x050000
+#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
 			QObject::connect(a, &QAction::toggled, this, &ContainerWidget::onActionToggleSectionContentVisibility);
 #else
 			QObject::connect(a, SIGNAL(toggled(bool)), this, SLOT(onActionToggleSectionContentVisibility(bool)));
@@ -350,7 +350,7 @@ QMenu* ContainerWidget::createContextMenu() const
 		a->setProperty("type", "floating");
 		a->setCheckable(true);
 		a->setChecked(fw->isVisible());
-#if QT_VERSION >= 0x050000
+#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
 		QObject::connect(a, &QAction::toggled, this, &ContainerWidget::onActionToggleSectionContentVisibility);
 #else
 		QObject::connect(a, SIGNAL(toggled(bool)), this, SLOT(onActionToggleSectionContentVisibility(bool)));
diff --git a/AdvancedDockingSystem/src/DropOverlay.cpp b/AdvancedDockingSystem/src/DropOverlay.cpp
index 269d84c..67def33 100644
--- a/AdvancedDockingSystem/src/DropOverlay.cpp
+++ b/AdvancedDockingSystem/src/DropOverlay.cpp
@@ -286,7 +286,7 @@ void hideDropOverlay()
 	{
 		MyOverlay->hide();
 		delete MyOverlay;
-#if QT_VERSION >= 0x050000
+#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
 		MyOverlayParent.clear();
 #else
 		MyOverlayParent = 0;
diff --git a/AdvancedDockingSystem/src/SectionTitleWidget.cpp b/AdvancedDockingSystem/src/SectionTitleWidget.cpp
index 243b394..2793498 100644
--- a/AdvancedDockingSystem/src/SectionTitleWidget.cpp
+++ b/AdvancedDockingSystem/src/SectionTitleWidget.cpp
@@ -90,7 +90,7 @@ void SectionTitleWidget::mouseReleaseEvent(QMouseEvent* ev)
 				InternalContentData data;
 				_fw->takeContent(data);
 				_fw->deleteLater();
-#if QT_VERSION >= 0x050000
+#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
 				_fw.clear();
 #else
 				_fw = 0;
@@ -140,7 +140,7 @@ void SectionTitleWidget::mouseReleaseEvent(QMouseEvent* ev)
 				InternalContentData data;
 				_fw->takeContent(data);
 				_fw->deleteLater();
-#if QT_VERSION >= 0x050000
+#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
 				_fw.clear();
 #else
 				_fw = 0;
diff --git a/AdvancedDockingSystem/src/SectionWidget.cpp b/AdvancedDockingSystem/src/SectionWidget.cpp
index 574f134..6647616 100644
--- a/AdvancedDockingSystem/src/SectionWidget.cpp
+++ b/AdvancedDockingSystem/src/SectionWidget.cpp
@@ -55,7 +55,7 @@ SectionWidget::SectionWidget(ContainerWidget* parent) :
 	closeButton->setToolTip(tr("Close"));
 	closeButton->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
 	_tabsLayout->addWidget(closeButton);
-#if QT_VERSION >= 0x050000
+#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
 	QObject::connect(closeButton, &QPushButton::clicked, this, &SectionWidget::onCloseButtonClicked);
 #else
 	QObject::connect(closeButton, SIGNAL(clicked(bool)), this, SLOT(onCloseButtonClicked()));
@@ -119,7 +119,7 @@ void SectionWidget::addContent(const SectionContent::RefPtr& c)
 	SectionTitleWidget* title = new SectionTitleWidget(c, NULL);
 	_sectionTitles.append(title);
 	_tabsLayout->insertWidget(_tabsLayout->count() - 2, title);
-#if QT_VERSION >= 0x050000
+#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
 	QObject::connect(title, &SectionTitleWidget::clicked, this, &SectionWidget::onSectionTitleClicked);
 #else
 	QObject::connect(title, SIGNAL(clicked()), this, SLOT(onSectionTitleClicked()));
@@ -146,7 +146,7 @@ void SectionWidget::addContent(const InternalContentData& data, bool autoActivat
 	_sectionTitles.append(data.titleWidget);
 	_tabsLayout->insertWidget(_tabsLayout->count() - 2, data.titleWidget);
 	data.titleWidget->setVisible(true);
-#if QT_VERSION >= 0x050000
+#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
 	QObject::connect(data.titleWidget, &SectionTitleWidget::clicked, this, &SectionWidget::onSectionTitleClicked);
 #else
 	QObject::connect(data.titleWidget, SIGNAL(clicked()), this, SLOT(onSectionTitleClicked()));
@@ -257,7 +257,7 @@ void SectionWidget::moveContent(int from, int to)
 	QLayoutItem* liFrom = NULL;
 
 	liFrom = _tabsLayout->takeAt(from);
-#if QT_VERSION >= 0x050000
+#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
 	_tabsLayout->insertItem(to, liFrom);
 #else
 	_tabsLayout->insertWidget(to, liFrom->widget());