diff --git a/Readme.MD b/Readme.MD
index 424b8d5..ea9c739 100644
--- a/Readme.MD
+++ b/Readme.MD
@@ -15,7 +15,7 @@ OSC port : 9001 (change OSCport in maxserver.py)
 
 Obviously change /dev/cu.usbserial-1D1310 with your serial port like /dev/tty.USB0
 
-Heavy use of https://github.com/mcauser/micropython-max7219
+Heavy use of https://github.com/mcauser/micropython-max7219 and https://github.com/SpotlightKid/micropython-osc
 
 # Hardware connections 
 
diff --git a/maxserver.py b/maxserver.py
index 8b286e1..9070cfb 100755
--- a/maxserver.py
+++ b/maxserver.py
@@ -89,7 +89,7 @@ def main(ip):
         pass
     finally:
         loop.close()
-        reqs = counter.count / (time.time() - start)
+        reqs = callback.count / (time.time() - start)
         print("Requests/second: %.2f" % reqs)
 
 if __name__ == '__main__':