diff --git a/git_cl.py b/git_cl.py
index 5c858cebe..3b1a8dd78 100755
--- a/git_cl.py
+++ b/git_cl.py
@@ -2599,6 +2599,7 @@ class _GerritChangelistImpl(_ChangelistCodereviewBase):
     env = os.environ.copy()
     env['GIT_REDACT_COOKIES'] = 'o,SSO,GSSO_Uberproxy'
     env['GIT_TR2_EVENT'] = os.path.join(traces_dir, 'tr2-event')
+    env['GIT_TRACE2_EVENT'] = os.path.join(traces_dir, 'tr2-event')
     env['GIT_TRACE_CURL'] = os.path.join(traces_dir, 'trace-curl')
     env['GIT_TRACE_CURL_NO_DATA'] = '1'
     env['GIT_TRACE_PACKET'] = os.path.join(traces_dir, 'trace-packet')