diff --git a/src/webui/abstractwebapplication.h b/src/webui/abstractwebapplication.h
index c723e0520..d2659ccc4 100644
--- a/src/webui/abstractwebapplication.h
+++ b/src/webui/abstractwebapplication.h
@@ -32,6 +32,9 @@
 #include <QHash>
 #include <QMap>
 #include <QObject>
+#ifndef QBT_USES_QT5
+#include <QStringList>
+#endif
 
 #include "base/http/irequesthandler.h"
 #include "base/http/responsebuilder.h"