diff --git a/mp0/logger.py b/mp0/logger.py
index 51ae7b9aa4fac4ab163382d3a128e2e9cc6e49f9..606326d7f4dbbcdd5669b790e0ef826b1381272d 100644
--- a/mp0/logger.py
+++ b/mp0/logger.py
@@ -69,7 +69,7 @@ def recv_from_client(conn):
 
 
 # draw the bandwith
-def graph_bandwith():
+def graph_bandwidth():
     last = int(timestamp_and_receiveAmount_list[-1][0])
     start = int(timestamp_and_receiveAmount_list[0][0])
 
@@ -106,7 +106,7 @@ def graph_delay():
     last = int(timestamp_and_receiveAmount_list[-1][0])
     start = int(timestamp_and_receiveAmount_list[0][0])
 
-    num = (last-start)/60+1
+    num = int((last-start))/60+1
     
     moment = [0 for i in range(num)] 
     delays = [[] for i in range(num)]