diff --git a/src/plugins/coreplugin/mimedatabase.h b/src/plugins/coreplugin/mimedatabase.h
index 077ad5431f2..13a9d3a370f 100644
--- a/src/plugins/coreplugin/mimedatabase.h
+++ b/src/plugins/coreplugin/mimedatabase.h
@@ -36,6 +36,7 @@
 #include <QtCore/QSharedPointer>
 #include <QtCore/QByteArray>
 #include <QtCore/QMutex>
+#include <QtCore/QFileInfo>
 
 QT_BEGIN_NAMESPACE
 class QIODevice;