diff --git a/gui/projectfile.cpp b/gui/projectfile.cpp
index 4717b25..8e3b0f6 100644
--- a/gui/projectfile.cpp
+++ b/gui/projectfile.cpp
@@ -29,6 +29,7 @@
 #include <QFile>
 #include <QDir>
 #include <QXmlStreamReader>
+#include <QXmlStreamWriter>
 
 ProjectFile *ProjectFile::mActiveProject;
 
@@ -1040,21 +1041,21 @@ void ProjectFile::SafeChecks::saveToXml(QXmlStreamWriter &xmlWriter) const
 {
     if (!classes && !externalFunctions && !internalFunctions && !externalVariables)
         return;
-    xmlWriter.writeStartElement(Settings::SafeChecks::XmlRootName);
+    xmlWriter.writeStartElement(static_cast<QString>(Settings::SafeChecks::XmlRootName));
     if (classes) {
-        xmlWriter.writeStartElement(Settings::SafeChecks::XmlClasses);
+        xmlWriter.writeStartElement(static_cast<QString>(Settings::SafeChecks::XmlClasses));
         xmlWriter.writeEndElement();
     }
     if (externalFunctions) {
-        xmlWriter.writeStartElement(Settings::SafeChecks::XmlExternalFunctions);
+        xmlWriter.writeStartElement(static_cast<QString>(Settings::SafeChecks::XmlExternalFunctions));
         xmlWriter.writeEndElement();
     }
     if (internalFunctions) {
-        xmlWriter.writeStartElement(Settings::SafeChecks::XmlInternalFunctions);
+        xmlWriter.writeStartElement(static_cast<QString>(Settings::SafeChecks::XmlInternalFunctions));
         xmlWriter.writeEndElement();
     }
     if (externalVariables) {
-        xmlWriter.writeStartElement(Settings::SafeChecks::XmlExternalVariables);
+        xmlWriter.writeStartElement(static_cast<QString>(Settings::SafeChecks::XmlExternalVariables));
         xmlWriter.writeEndElement();
     }
     xmlWriter.writeEndElement();