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--- a/upmpd/renderctl.hxx
+++ b/upmpd/renderctl.hxx
@@ -22,6 +22,8 @@
 #include "libupnpp/device/device.hxx"
 
 class UpMpd;
+
+using namespace UPnPP;
 
 class UpMpdRenderCtl : public UpnpService {
 public: