diff --git a/src/plugins/StatisticsChart.py b/src/plugins/StatisticsChart.py
index 2fed2d3bf..22a8781d2 100755
--- a/src/plugins/StatisticsChart.py
+++ b/src/plugins/StatisticsChart.py
@@ -467,19 +467,20 @@ class StatisticsChartOptions(ReportOptions.ReportOptions):
         }
         self.options_help = {
             'extract'   : ("=num", "Data to show",
-                               [item[0] for item in _Extract.extractors],
-                               False),
+                                [item[0] for item in _Extract.extractors],
+                                True),
             'sort'      : ("=num", "Sorted by",
-                               ["%d\t%s" % item for item in self._sorts],
-                               False),
-            'reverse'   : ("=num", "Sort in reverse order",
-                               ["No", "Yes"], True),
+                                ["%d\t%s" % item for item in self._sorts],
+                                False),
+            'reverse'   : ("=0/1", "Whether to sort in reverse order",
+                                ["Do not sort in reverse", "Sort in reverse"],
+                                True),
             'year_from' : ("=num", "Birth year from which to include people",
                                 "earlier than 'year_to' value"),
             'year_to'   : ("=num", "Birth year until which to include people",
-                               ("smaller than %d") % self.options_dict['year_to']),
-            'no_years'  : ("=num", "Include people without birth years",
-                               ["No", "Yes"], True),
+                                "smaller than %d" % self.options_dict['year_to']),
+            'no_years'  : ("=0/1", "Whether to include people without birth years",
+                                ["Do not include", "Include"], True),
             'gender'    : ("=num", "Genders included",
                                ["%d\t%s" % item for item in self._genders],
                                False)