diff --git a/connector/qstringhash.h b/connector/qstringhash.h
index 0c60cb5..3e9c205 100644
--- a/connector/qstringhash.h
+++ b/connector/qstringhash.h
@@ -1,6 +1,7 @@
 #ifndef SYNCTHING_CONNECTOR_QSTRING_HASH_H
 #define SYNCTHING_CONNECTOR_QSTRING_HASH_H
 
+#include <QHash>
 #include <QString>
 
 #include <functional>