diff --git a/AUTHORS b/AUTHORS
index b3f2bfcb..6106cbba 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -32,6 +32,7 @@ Matus Hamorsky <mhamorsky@gmail.com>
 Max Wolf <YIDIEPXGXGPN@spammotel.com>
 McClain Looney <m@loonsoft.com>
 Mikael Helbo Kjaer <mhk@designtech.dk>
+Mikko Koppanen <mkoppanen@php.net>
 Nir Soffer <nirsof@gmail.com>
 Pavel Gushcha <pavimus@gmail.com>
 Pavol Malosek <malosek@fastmq.com>
diff --git a/src/pipe.hpp b/src/pipe.hpp
index bfe6603b..8898bbcf 100644
--- a/src/pipe.hpp
+++ b/src/pipe.hpp
@@ -57,7 +57,7 @@ namespace zmq
 
     class reader_t : public object_t, public array_item_t
     {
-        friend void zmq::create_pipe (object_t*, object_t*, uint64_t,
+        friend void create_pipe (object_t*, object_t*, uint64_t,
             int64_t, reader_t**, writer_t**);
         friend class writer_t;
 
@@ -126,7 +126,7 @@ namespace zmq
 
     class writer_t : public object_t, public array_item_t
     {
-        friend void zmq::create_pipe (object_t*, object_t*, uint64_t,
+        friend void create_pipe (object_t*, object_t*, uint64_t,
             int64_t, reader_t**, writer_t**);
 
     public: