diff --git a/configs/ruby/MI_example.py b/configs/ruby/MI_example.py
index 82817d60a..062748eef 100644
--- a/configs/ruby/MI_example.py
+++ b/configs/ruby/MI_example.py
@@ -27,6 +27,7 @@
 #
 # Authors: Brad Beckmann
 
+import math
 import m5
 from m5.objects import *
 from m5.defines import buildEnv