diff --git a/tools_webrtc/autoroller/roll_deps.py b/tools_webrtc/autoroller/roll_deps.py
index 99e85a4080..376c9a744e 100755
--- a/tools_webrtc/autoroller/roll_deps.py
+++ b/tools_webrtc/autoroller/roll_deps.py
@@ -319,7 +319,7 @@ def GenerateCommitMessage(current_cr_rev, new_cr_rev, current_commit_pos,
 
   commit_msg.append('TBR=%s' % tbr_authors)
   commit_msg.append('BUG=None')
-  commit_msg.append('CQ_INCLUDE_TRYBOTS=%s' & EXTRA_TRYBOTS)
+  commit_msg.append('CQ_INCLUDE_TRYBOTS=%s' % EXTRA_TRYBOTS)
   return '\n'.join(commit_msg)