diff --git a/modules/stream_filter/dash/mpd/MPD.cpp b/modules/stream_filter/dash/mpd/MPD.cpp
index 06843daaa7a1dc766b989f9ed68f7472f272e5ea..46addc5d8d8c6bceddf168fc969c8ad6377fd2f0 100644
--- a/modules/stream_filter/dash/mpd/MPD.cpp
+++ b/modules/stream_filter/dash/mpd/MPD.cpp
@@ -30,10 +30,9 @@
 using namespace dash::mpd;
 using namespace dash::exception;
 
-MPD::MPD    (std::map<std::string, std::string> attributes)
+MPD::MPD    (const AttributesMap& attributes) : attributes( attributes ),
+    programInfo( NULL )
 {
-    this->attributes    = attributes;
-    this->programInfo   = NULL;
 }
 
 MPD::~MPD   ()
diff --git a/modules/stream_filter/dash/mpd/MPD.h b/modules/stream_filter/dash/mpd/MPD.h
index f73d1dd42d917435a62126b4908c856ed12de4fa..2a6914209899eb0acbad5a4cddf441b0bf9e459d 100644
--- a/modules/stream_filter/dash/mpd/MPD.h
+++ b/modules/stream_filter/dash/mpd/MPD.h
@@ -44,7 +44,7 @@ namespace dash
             typedef std::map<std::string, std::string>      AttributesMap;
 
             public:
-                MPD         (std::map<std::string, std::string> attributes);
+                MPD         (const AttributesMap& attributes);
                 virtual ~MPD();
 
                 const std::string&             getType                 () const throw(dash::exception::AttributeNotPresentException);