diff --git a/src/plugins/coreplugin/iversioncontrol.h b/src/plugins/coreplugin/iversioncontrol.h
index 81df51773ab..c5338d92780 100644
--- a/src/plugins/coreplugin/iversioncontrol.h
+++ b/src/plugins/coreplugin/iversioncontrol.h
@@ -35,6 +35,7 @@
 
 #include <QDateTime>
 #include <QFlags>
+#include <QHash>
 #include <QObject>
 #include <QString>