diff --git a/tools/autoroller/roll_chromium_revision.py b/tools/autoroller/roll_chromium_revision.py
index 70641dda07..fe6ba224a7 100755
--- a/tools/autoroller/roll_chromium_revision.py
+++ b/tools/autoroller/roll_chromium_revision.py
@@ -291,6 +291,7 @@ def GenerateCommitMessage(current_cr_rev, new_cr_rev, current_commit_pos,
     commit_msg.append('No update to Clang.\n')
 
   commit_msg.append('TBR=%s' % tbr_authors)
+  commit_msg.append('BUG=None')
   return '\n'.join(commit_msg)