diff --git a/synthDC/extractSummary.py b/synthDC/extractSummary.py
index 29e1c802..d4f86fb3 100755
--- a/synthDC/extractSummary.py
+++ b/synthDC/extractSummary.py
@@ -11,6 +11,7 @@ import numpy as np
 from ppa.ppaAnalyze import noOutliers
 from matplotlib import ticker
 import argparse
+import os
 
 
 def synthsintocsv():