diff --git a/tools/genv8constants.py b/tools/genv8constants.py
index 8ab2ed8bae50c0..cb648d39ce7a18 100755
--- a/tools/genv8constants.py
+++ b/tools/genv8constants.py
@@ -95,7 +95,7 @@ def out_define():
       curr_octet += 1
 
   match = pattern.match(line)
-  if match == None:
+  if match is None:
     continue
 
   # Print previous symbol