diff --git a/MeshObjectInfoPlugin.cc b/MeshObjectInfoPlugin.cc
index 2c5b6c1ed65dcda97cb87cbf83e9588d02f8020a..a0056ffbd3d0e9ad5c6b95f06288a689a109d88c 100644
--- a/MeshObjectInfoPlugin.cc
+++ b/MeshObjectInfoPlugin.cc
@@ -65,10 +65,6 @@
 
 #include "ValenceHistogramDialog.hh"
 
-#if QT_VERSION >= 0x050000
-#else
-#include <QtGui>
-#endif
 
 //== IMPLEMENTATION ==========================================================
 
@@ -968,8 +964,5 @@ void InfoMeshObjectPlugin::slotShowHistogram() {
     dialog->raise();
 }
 
-#if QT_VERSION < 0x050000
-  Q_EXPORT_PLUGIN2( InfoMeshObjectPlugin , InfoMeshObjectPlugin );
-#endif
 
 
diff --git a/MeshObjectInfoPlugin.hh b/MeshObjectInfoPlugin.hh
index 8bf77f897b5840ac63da3518036001bcf77a72a7..de197f0d94b0a731dbc658356dcf36f5d845d92a 100644
--- a/MeshObjectInfoPlugin.hh
+++ b/MeshObjectInfoPlugin.hh
@@ -89,9 +89,7 @@ class InfoMeshObjectPlugin : public QObject, BaseInterface, InformationInterface
       Q_INTERFACES(StatusbarInterface)
       Q_INTERFACES(LoadSaveInterface)
 
-#if QT_VERSION >= 0x050000
   Q_PLUGIN_METADATA(IID "org.OpenFlipper.Plugins.Plugin-MeshObjectInfo")
-#endif
 
   signals:
     // BaseInterface
diff --git a/ValenceHistogramDialog.hh b/ValenceHistogramDialog.hh
index b2c3070b1564e03c607addf7a52884ff5b39b748..4664b790e14643f36413c9c9d30ac85b16d3503b 100644
--- a/ValenceHistogramDialog.hh
+++ b/ValenceHistogramDialog.hh
@@ -54,11 +54,7 @@
 
 #include "ui_infoValenceHistograms.hh"
 
-#if QT_VERSION >= 0x050000
   #include <QtWidgets>
-#else
-  #include <QtGui>
-#endif
 
 
 class ValenceHistogramDialog: public QDialog, public Ui::ValenceHistogramsDlg {
diff --git a/infoBar.hh b/infoBar.hh
index 33f137f08294a17018340d9b072b12e9199ab0d5..c79ea3020e679bc5c4b16ba0a825b2d234aeee18 100644
--- a/infoBar.hh
+++ b/infoBar.hh
@@ -49,11 +49,7 @@
 
 #include "ui_infoBar.hh"
 
-#if QT_VERSION >= 0x050000 
   #include <QtWidgets>
-#else
-  #include <QtGui>
-#endif
 
 
 class InfoBar : public QWidget, public Ui::InfoBar
diff --git a/infoDialog.hh b/infoDialog.hh
index 5efc5b746527fb8556b544ad0c611f2745f60a29..8e03221d5d069f28beacdbe163c30c83b5c845ca 100644
--- a/infoDialog.hh
+++ b/infoDialog.hh
@@ -49,11 +49,7 @@
 
 #include "ui_infoWidget.hh"
 
-#if QT_VERSION >= 0x050000 
   #include <QtWidgets>
-#else
-  #include <QtGui>
-#endif
 
 
 class InfoDialog : public QDialog, public Ui::InfoWidget