diff --git a/companion/src/companion.cpp b/companion/src/companion.cpp
index 4be914d1d..7519ff054 100644
--- a/companion/src/companion.cpp
+++ b/companion/src/companion.cpp
@@ -50,14 +50,16 @@ class MyProxyStyle : public QProxyStyle
 
 int main(int argc, char *argv[])
 {
+#if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0))
+  /* From doc: This attribute must be set before Q(Gui)Application is constructed. */
+  QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
+#endif
+
   QApplication app(argc, argv);
   app.setApplicationName(APP_COMPANION);
   app.setOrganizationName(COMPANY);
   app.setOrganizationDomain(COMPANY_DOMAIN);
   app.setAttribute(Qt::AA_DontShowIconsInMenus, false);
-#if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0))
-  app.setAttribute(Qt::AA_EnableHighDpiScaling);
-#endif
 
   Q_INIT_RESOURCE(companion);
 
diff --git a/companion/src/simulator.cpp b/companion/src/simulator.cpp
index 5da404801..559318ec7 100644
--- a/companion/src/simulator.cpp
+++ b/companion/src/simulator.cpp
@@ -71,13 +71,15 @@ void sharedHelpText(QTextStream &stream)
 int main(int argc, char *argv[])
 {
 
+#if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0))
+  /* From doc: This attribute must be set before Q(Gui)Application is constructed. */
+  QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
+#endif
+
   QApplication app(argc, argv);
   app.setApplicationName(APP_SIMULATOR);
   app.setOrganizationName(COMPANY);
   app.setOrganizationDomain(COMPANY_DOMAIN);
-#if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0))
-  app.setAttribute(Qt::AA_EnableHighDpiScaling);
-#endif
 
   Q_INIT_RESOURCE(companion);