diff --git a/source/pyzmq/patterns/code/pairclient.py b/source/pyzmq/patterns/code/pairclient.py
index 467cf05..23a1062 100644
--- a/source/pyzmq/patterns/code/pairclient.py
+++ b/source/pyzmq/patterns/code/pairclient.py
@@ -9,8 +9,8 @@
 socket.connect("tcp://localhost:%s" % port)
 
 while True:
-    msg = socket.recv()
-    print msg
-    socket.send("client message to server1")
-    socket.send("client message to server2")
+    msg = socket.recv_string()
+    print(msg)
+    socket.send_string("client message to server1")
+    socket.send_string("client message to server2")
     time.sleep(1)
diff --git a/source/pyzmq/patterns/code/pairserver.py b/source/pyzmq/patterns/code/pairserver.py
index edc0ad1..21e0be5 100644
--- a/source/pyzmq/patterns/code/pairserver.py
+++ b/source/pyzmq/patterns/code/pairserver.py
@@ -9,7 +9,7 @@
 socket.bind("tcp://*:%s" % port)
 
 while True:
-    socket.send("Server message to client3")
-    msg = socket.recv()
-    print msg
+    socket.send_string("Server message to client3")
+    msg = socket.recv_string()
+    print(msg)
     time.sleep(1)