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--- a/libupnpp/discovery.cxx
+++ b/libupnpp/discovery.cxx
@@ -32,7 +32,6 @@
 #include <upnp/upnptools.h>
 
 #include "workqueue.hxx"
-#include "expatmm.hxx"
 #include "upnpplib.hxx"
 #include "description.hxx"
 #include "discovery.hxx"