diff --git a/src/Charts/LTMWindow.h b/src/Charts/LTMWindow.h
index e521d0be7..7f4721918 100644
--- a/src/Charts/LTMWindow.h
+++ b/src/Charts/LTMWindow.h
@@ -27,6 +27,7 @@
 #include <QWebEngineView>
 #else
 #include <QWebView>
+#include <QWebFrame>
 #endif
 #include <QTimer>
 #include "Context.h"