diff --git a/tools/search_files.py b/tools/search_files.py
index 62674e8fbbb4e3..f22c6161c0c7ad 100644
--- a/tools/search_files.py
+++ b/tools/search_files.py
@@ -7,6 +7,7 @@
 
 import argparse
 import utils
+import sys
 
 def DoMain(args = []):
   parser = argparse.ArgumentParser(
@@ -18,5 +19,6 @@ def DoMain(args = []):
   options = parser.parse_args(args)
   return '\n'.join(utils.SearchFiles(options.directory, options.ext))
 
+
 if __name__ == '__main__':
   DoMain(sys.argv[1:])