diff --git a/GUI/View/MaterialEditor/MaterialEditorModel.cpp b/GUI/View/MaterialEditor/MaterialEditorModel.cpp
index cad287d81b7c6d0c6e14154c8b6a7948db224ded..14b95f1d250a354c1dbe4310756ac251ad305d9d 100644
--- a/GUI/View/MaterialEditor/MaterialEditorModel.cpp
+++ b/GUI/View/MaterialEditor/MaterialEditorModel.cpp
@@ -36,7 +36,7 @@ QVariant MaterialEditorModel::headerData(int section, Qt::Orientation /*orientat
                                          int role /* = Qt::DisplayRole */) const
 {
     if (role != Qt::DisplayRole)
-        return QVariant();
+        return {};
 
     switch (section) {
     case NAME:
@@ -47,15 +47,15 @@ QVariant MaterialEditorModel::headerData(int section, Qt::Orientation /*orientat
         return "Material parameters";
     case MAGNETIZATION:
         return "Magnetization [A/m]";
+    default:
+        return {}
     }
-
-    return QVariant();
 }
 
 QVariant MaterialEditorModel::data(const QModelIndex& index, int role /*= Qt::DisplayRole*/) const
 {
     if (!index.isValid())
-        return QVariant();
+        return {};
 
     MaterialItem* material = m_model->materialItems()[index.row()];
 
@@ -94,7 +94,7 @@ QVariant MaterialEditorModel::data(const QModelIndex& index, int role /*= Qt::Di
         }
     }
 
-    return QVariant();
+    return {};
 }
 
 void MaterialEditorModel::setMaterialItemName(const QModelIndex& index, const QString& name)