diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8401c3c41..48d1904f0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -179,7 +179,7 @@ check_library_exists(rt shm_open "" LMMS_HAVE_LIBRT)
 
 LIST(APPEND CMAKE_PREFIX_PATH "${CMAKE_INSTALL_PREFIX}")
 
-FIND_PACKAGE(Qt5 5.6.0 COMPONENTS Core Gui Widgets Xml REQUIRED)
+FIND_PACKAGE(Qt5 5.9.0 COMPONENTS Core Gui Widgets Xml REQUIRED)
 FIND_PACKAGE(Qt5 COMPONENTS LinguistTools QUIET)
 
 INCLUDE_DIRECTORIES(
diff --git a/plugins/VstBase/VstPlugin.cpp b/plugins/VstBase/VstPlugin.cpp
index b23ae39bf..5dcd864f8 100644
--- a/plugins/VstBase/VstPlugin.cpp
+++ b/plugins/VstBase/VstPlugin.cpp
@@ -735,14 +735,12 @@ void VstPlugin::createUI( QWidget * parent )
 
 	QWidget* container = nullptr;
 
-#if QT_VERSION >= 0x050100
 	if (m_embedMethod == "qt" )
 	{
 		QWindow* vw = QWindow::fromWinId(m_pluginWindowID);
 		container = QWidget::createWindowContainer(vw, parent );
 		container->installEventFilter(this);
 	} else
-#endif
 
 #ifdef LMMS_BUILD_WIN32
 	if (m_embedMethod == "win32" )
@@ -801,7 +799,6 @@ void VstPlugin::createUI( QWidget * parent )
 
 bool VstPlugin::eventFilter(QObject *obj, QEvent *event)
 {
-#if QT_VERSION >= 0x050100
 	if (embedMethod() == "qt" && obj == m_pluginWidget)
 	{
 		if (event->type() == QEvent::Show) {
@@ -809,7 +806,6 @@ bool VstPlugin::eventFilter(QObject *obj, QEvent *event)
 		}
 		qDebug() << obj << event;
 	}
-#endif
 	return false;
 }
 
diff --git a/src/core/ConfigManager.cpp b/src/core/ConfigManager.cpp
index 61d84770a..19ce80ddb 100644
--- a/src/core/ConfigManager.cpp
+++ b/src/core/ConfigManager.cpp
@@ -192,9 +192,7 @@ QStringList ConfigManager::availableVstEmbedMethods()
 {
 	QStringList methods;
 	methods.append("none");
-#if QT_VERSION >= 0x050100
 	methods.append("qt");
-#endif
 #ifdef LMMS_BUILD_WIN32
 	methods.append("win32");
 #endif
diff --git a/src/core/main.cpp b/src/core/main.cpp
index cadffdafa..abea43970 100644
--- a/src/core/main.cpp
+++ b/src/core/main.cpp
@@ -356,9 +356,7 @@ int main( int argc, char * * argv )
 	// don't let OS steal the menu bar. FIXME: only effective on Qt4
 	QCoreApplication::setAttribute( Qt::AA_DontUseNativeMenuBar );
 #endif
-#if QT_VERSION >= QT_VERSION_CHECK(5, 6, 0)
 	QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
-#endif
 	QCoreApplication * app = coreOnly ?
 			new QCoreApplication( argc, argv ) :
 					new gui::MainApplication(argc, argv);
diff --git a/src/gui/MainWindow.cpp b/src/gui/MainWindow.cpp
index 072edc0ec..3522d0e2d 100644
--- a/src/gui/MainWindow.cpp
+++ b/src/gui/MainWindow.cpp
@@ -324,10 +324,7 @@ void MainWindow::finalize()
 					SLOT(onExportProjectMidi()),
 					Qt::CTRL + Qt::Key_M );
 
-// Prevent dangling separator at end of menu per https://bugreports.qt.io/browse/QTBUG-40071
-#if !(defined(LMMS_BUILD_APPLE) && (QT_VERSION < 0x050600))
 	project_menu->addSeparator();
-#endif
 	project_menu->addAction( embed::getIconPixmap( "exit" ), tr( "&Quit" ),
 					qApp, SLOT(closeAllWindows()),
 					Qt::CTRL + Qt::Key_Q );
@@ -400,10 +397,7 @@ void MainWindow::finalize()
 							this, SLOT(help()));
 	}
 
-// Prevent dangling separator at end of menu per https://bugreports.qt.io/browse/QTBUG-40071
-#if !(defined(LMMS_BUILD_APPLE) && (QT_VERSION < 0x050600))
 	help_menu->addSeparator();
-#endif
 	help_menu->addAction( embed::getIconPixmap( "icon_small" ), tr( "About" ),
 				  this, SLOT(aboutLMMS()));