diff --git a/GUI/Model/Descriptor/DoubleProperty.h b/GUI/Model/Descriptor/DoubleProperty.h
index fe4aa0af2b3c44d34b57d452d443baa091dffdf4..dd8d84b411f3ca8829d6f5222da02a44d5afc2b6 100644
--- a/GUI/Model/Descriptor/DoubleProperty.h
+++ b/GUI/Model/Descriptor/DoubleProperty.h
@@ -19,7 +19,6 @@
 #include <QList>
 #include <QString>
 #include <QXmlStreamReader>
-#include <variant>
 
 //! Class for representing a double value, its attributes and its accessors.
 //!
diff --git a/GUI/Model/Detector/ResolutionFunctionItems.h b/GUI/Model/Detector/ResolutionFunctionItems.h
index 582938c851a734a78b78222088968e2c1b495563..22665e1f20f07e53e0b7d4a4aae60270bec18553 100644
--- a/GUI/Model/Detector/ResolutionFunctionItems.h
+++ b/GUI/Model/Detector/ResolutionFunctionItems.h
@@ -17,7 +17,6 @@
 
 #include "GUI/Model/Descriptor/DoubleProperty.h"
 #include <memory>
-#include <variant>
 
 class IResolutionFunction2D;
 
diff --git a/GUI/Model/Model/ParameterTreeUtil.h b/GUI/Model/Model/ParameterTreeUtil.h
index 33d418a99e72c3bf04d0c1c37493f5c7c2c38add..11c6fa8f7b2b837714e9c2d157d70852ade261e3 100644
--- a/GUI/Model/Model/ParameterTreeUtil.h
+++ b/GUI/Model/Model/ParameterTreeUtil.h
@@ -18,7 +18,6 @@
 #include <QPair>
 #include <QString>
 #include <functional>
-#include <variant>
 
 class BackgroundItem;
 class BeamDistributionItem;
diff --git a/GUI/Model/Sample/MaterialItem.h b/GUI/Model/Sample/MaterialItem.h
index 7e016fffc84a5e5b629279211bbd08702e32dbaa..1937025b355d85d049878ad6cfdc30fa83b9d9bb 100644
--- a/GUI/Model/Sample/MaterialItem.h
+++ b/GUI/Model/Sample/MaterialItem.h
@@ -22,7 +22,6 @@
 #include <heinz/Complex.h>
 #include <heinz/Vectors3D.h>
 #include <memory>
-#include <variant>
 
 class Material;
 
diff --git a/GUI/View/Numeric/NumWidgetUtil.h b/GUI/View/Numeric/NumWidgetUtil.h
index 1250b54c891ede24c991777f5053fb2c5d25bc66..d7f9a5d150987e053c20854ef5ca0a95edeffa54 100644
--- a/GUI/View/Numeric/NumWidgetUtil.h
+++ b/GUI/View/Numeric/NumWidgetUtil.h
@@ -19,12 +19,10 @@
 #include <QCheckBox>
 #include <QFormLayout>
 #include <QSpinBox>
-#include <variant>
 
 class DoubleSpinBox;
 class DoubleProperty;
 class ScientificSpinBox;
-enum class Unit;
 
 namespace GUI::Util {
 
diff --git a/Resample/Slice/ProfileHelper.h b/Resample/Slice/ProfileHelper.h
index 1c6fcf3cce7e6100db4fe79a8f0803fec460b034..69b4b5884045f43fd9f282d8cd429780bf2a4920 100644
--- a/Resample/Slice/ProfileHelper.h
+++ b/Resample/Slice/ProfileHelper.h
@@ -21,7 +21,6 @@
 #include "Resample/Slice/SliceStack.h"
 #include "Sample/Material/Material.h"
 #include <utility>
-#include <variant>
 #include <vector>
 
 //! Object that can generate the material profile of a sample as a function of depth.
@@ -34,7 +33,6 @@ public:
     ProfileHelper(const SliceStack& stack);
     ~ProfileHelper() = default;
 
-
     std::vector<complex_t> calculateSLDProfile(const std::vector<double>& z_values) const;
     std::vector<double> calculateMagnetizationProfile(const std::vector<double>& z_values,
                                                       std::string xyz) const;