diff --git a/hdpexamples/python-streaming/same_dna/mapper.py b/hdpexamples/python-streaming/same_dna/mapper.py
index f9ea9e8c..ca174b9c 100644
--- a/hdpexamples/python-streaming/same_dna/mapper.py
+++ b/hdpexamples/python-streaming/same_dna/mapper.py
@@ -5,7 +5,7 @@
 '''
 
 import sys
-
+import re
 
 def read_input(file):
     for line in file: