diff --git a/src/dbus/qdbusabstractadaptor_p.h b/src/dbus/qdbusabstractadaptor_p.h
index ed28777734..134cc78e57 100644
--- a/src/dbus/qdbusabstractadaptor_p.h
+++ b/src/dbus/qdbusabstractadaptor_p.h
@@ -102,10 +102,6 @@ public: // typedefs
         { return QLatin1String(interface) < other; }
         inline bool operator<(const QByteArray &other) const
         { return interface < other; }
-#if defined(Q_CC_MSVC) && _MSC_VER < 1600
-        friend inline bool operator<(const QString &str, const AdaptorData &obj)
-        { return str < QLatin1String(obj.interface); }
-#endif
     };
     typedef QVector<AdaptorData> AdaptorMap;
 
diff --git a/src/dbus/qdbusconnection_p.h b/src/dbus/qdbusconnection_p.h
index 3043d7378c..444d4727fd 100644
--- a/src/dbus/qdbusconnection_p.h
+++ b/src/dbus/qdbusconnection_p.h
@@ -148,14 +148,6 @@ public:
             { return name < other; }
         inline bool operator<(const QStringRef &other) const
             { return QStringRef(&name) < other; }
-#if defined(Q_CC_MSVC) && _MSC_VER < 1600
-        inline bool operator<(const ObjectTreeNode &other) const
-            { return name < other.name; }
-        friend inline bool operator<(const QString &str, const ObjectTreeNode &obj)
-            { return str < obj.name; }
-        friend inline bool operator<(const QStringRef &str, const ObjectTreeNode &obj)
-            { return str < QStringRef(&obj.name); }
-#endif
         inline bool isActive() const
         { return obj || !children.isEmpty(); }