diff --git a/src/network/bearer/qnetworkconfiguration.h b/src/network/bearer/qnetworkconfiguration.h
index 9a4d78020c..6f056a16d5 100644
--- a/src/network/bearer/qnetworkconfiguration.h
+++ b/src/network/bearer/qnetworkconfiguration.h
@@ -48,10 +48,6 @@
 #include <QtCore/qstring.h>
 #include <QtCore/qlist.h>
 
-#if defined(Q_OS_WIN) && defined(interface)
-#undef interface
-#endif
-
 QT_BEGIN_HEADER
 
 QT_BEGIN_NAMESPACE