diff --git a/spectrum/src/frontends/xmpp/BlockSerializer.h b/spectrum/src/frontends/xmpp/BlockSerializer.h
index 928e6e1a8e87604f29ac8f9d50394b8f36c4c300..da306b2fdaf5113ed9abe94ebc638451201cec84 100644
--- a/spectrum/src/frontends/xmpp/BlockSerializer.h
+++ b/spectrum/src/frontends/xmpp/BlockSerializer.h
@@ -9,6 +9,8 @@
 #include <Swiften/Serializer/GenericPayloadSerializer.h>
 #include <BlockPayload.h>
 
+#include "Swiften/SwiftenCompat.h"
+
 // This payload is NOT part of ANY XEP and it is only
 // libtransport related extension.
 namespace Transport {
@@ -16,6 +18,6 @@ namespace Transport {
 		public:
 			BlockSerializer();
 
-			virtual std::string serializePayload(boost::shared_ptr<BlockPayload>)  const;
+			virtual std::string serializePayload(SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<BlockPayload>)  const;
 	};
 }