diff --git a/fairmq/PropertyOutput.h b/fairmq/PropertyOutput.h
index 62fbbac5..ce23eaa4 100644
--- a/fairmq/PropertyOutput.h
+++ b/fairmq/PropertyOutput.h
@@ -12,9 +12,14 @@
 
 #include <sstream>
 
-inline std::ostream& operator<<(std::ostream& os, const fair::mq::Property& p)
+namespace boost
+{
+
+inline std::ostream& operator<<(std::ostream& os, const boost::any& p)
 {
     return os << fair::mq::PropertyHelper::GetPropertyInfo(p).first;
 }
 
+}
+
 #endif /* FAIR_MQ_PROPERTYOUT_H */