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--- a/libupnpp/soaphelp.hxx
+++ b/libupnpp/soaphelp.hxx
@@ -23,6 +23,8 @@
 #include <unordered_map>
 
 #include <upnp/ixml.h>
+
+namespace UPnPP {
 
 /** Store returned values after decoding the arguments in a SOAP Call */
 class SoapDecodeOutput {
@@ -110,4 +112,7 @@
 extern bool decodePropertySet(IXML_Document *doc, 
                        std::unordered_map<std::string,std::string>& out);
 
+
+} // namespace UPnPP
+
 #endif /* _SOAPHELP_H_X_INCLUDED_ */