diff --git a/erp5/util/benchmark/process.py b/erp5/util/benchmark/process.py
index 688e3c0e41765470f61f5e9f2a2574af9cf79c91..87ff149ea7ea6ce1d3a5c1b1b72c9de42b3372ec 100644
--- a/erp5/util/benchmark/process.py
+++ b/erp5/util/benchmark/process.py
@@ -81,7 +81,8 @@ class BenchmarkProcess(multiprocessing.Process):
         msg = "%s: %s" % (target, traceback.format_exc())
 
         try:
-          msg += self._browser.contents
+          msg += "Last response headers:\n%s\nLast response contents:\n%s" % \
+              (self._browser.headers, self._browser.contents)
         except:
           pass