diff --git a/data analysis/analysis/analysis.py b/data analysis/analysis/analysis.py
index 52e6e999..a279d886 100644
--- a/data analysis/analysis/analysis.py	
+++ b/data analysis/analysis/analysis.py	
@@ -185,6 +185,7 @@ import csv
 import numba
 from numba import jit
 import numpy as np
+import math
 try:
     from analysis import trueskill as Trueskill
 except: