diff --git a/erp5/util/benchmark/report.py b/erp5/util/benchmark/report.py
index 6015962fe7374dd16eec042bed301d7b745876fb..9fc12c0e94d05e5fdd61b21161d74c463b3082ce 100755
--- a/erp5/util/benchmark/report.py
+++ b/erp5/util/benchmark/report.py
@@ -168,7 +168,7 @@ def computeStatisticFromFilenameList(argument_namespace, filename_list,
         use_case_suite = row_use_case_mapping_dict.get(idx, None)
         if use_case_suite:
           current_count = int(row)
-          current_duration = int(row_iter.next()[1]) / 3600.0
+          current_duration = float(row_iter.next()[1]) / 3600.0
           if not current_count:
             continue
 
diff --git a/erp5/util/benchmark/result.py b/erp5/util/benchmark/result.py
index 2edbc49ae89cb2ceb48b008e3cca228a8c35b9ab..5b23a1462ee9214787f47546de4739b9d58d42f6 100644
--- a/erp5/util/benchmark/result.py
+++ b/erp5/util/benchmark/result.py
@@ -217,7 +217,7 @@ class BenchmarkResult(object):
                                    self._current_suite_dict['expected'])
 
     self._current_suite_dict['all_use_case_result_list'].append(
-      (self._current_use_case_counter, int(elapsed_time)))
+      (self._current_use_case_counter, elapsed_time))
 
     if self._current_use_case_counter != 0:
       self._current_suite_dict['use_case_stat'].add(