diff --git a/parse_test_results.py b/parse_test_results.py
index 30c1393e6cd4000506447599f5360e1f65f54148..a1b36340816c246007618843499afaad0f897669 100644
--- a/parse_test_results.py
+++ b/parse_test_results.py
@@ -60,9 +60,9 @@ class TestOutputParser:
         excel_writer = ExcelWriter(self.output_file)
         for entry in self.test_entries:
             excel_writer.write_test_entry(entry)
-        
+
         # Write chart
-        excel_writer.write_pie_chart()
+        excel_writer.write_pie_chart_data()
 
         # And finally, save the work book
         excel_writer.save()
diff --git a/write_excel.py b/write_excel.py
index be7ca930486da407b0610d389bfb7df9540a1195..1591275ffc04ca33f6a0eae0b067df32a175192a 100644
--- a/write_excel.py
+++ b/write_excel.py
@@ -79,7 +79,7 @@ class ExcelWriter:
             work_book = Workbook()
             init_workbook(work_book)
             return work_book
-    
+
     def get_chart_work_sheet(self):
         """
         Returns work sheet where charts will be drawn to.
@@ -90,43 +90,54 @@ class ExcelWriter:
             return chart_work_sheet
         except KeyError:
             return self.work_book.create_sheet("charts")
-    
+
     def write_pie_chart_data(self):
         """
         Writes pie chart data (the charts sheet) required to construct the pie chart later
         """
         chart_work_sheet = self.get_chart_work_sheet()
 
+        # Format data from main work sheet and insert into charts sheet
+
+        # Titles
+        chart_work_sheet["A2"] = "PASS"
+        chart_work_sheet["A3"] = "FAIL"
+
+        #Data
+        data = self.get_pass_fail_counts()
+        chart_work_sheet.cell(row=2, column=2).value = data[0]
+        chart_work_sheet.cell(row=3, column=2).value = data[1]
+
         # Get data from main work sheet
-        last_row = self.get_last_row()
-        data = Reference(self.work_sheet, min_col=3, max_col=3, min_row=2, max_row=last_row)
+        data = Reference(chart_work_sheet, min_col=2, max_col=2, min_row=2, max_row=3)
+        labels = Reference(chart_work_sheet, min_col=1, max_col=1, min_row=2, max_row=3)
 
         # Construct pie chart
         pie = PieChart()
-        pie.add_data(data, titles_from_data=True)
-        #pie.set_categories(labels)
+        pie.add_data(data)#, titles_from_data=True)
+        pie.set_categories(labels)
         pie.title = "PASS/FAIL Distribution"
 
-        chart_work_sheet.add_chart(pie, "A1")
-    
-    def write_pie_chart(self):
+        chart_work_sheet.add_chart(pie, "E1")
+
+    def get_pass_fail_counts(self):
         """
-        Writes a pie chart showing PASS/FAIL stats.
-        Writes the chart to a separate work sheet.
+        Return PASS/FAIL stats as tuple (# of PASS, # of FAIL)
         """
-        chart_work_sheet = self.get_chart_work_sheet()
 
         # Get data from main work sheet
         last_row = self.get_last_row()
-        data = Reference(self.work_sheet, min_col=3, max_col=3, min_row=2, max_row=last_row)
-
-        # Construct pie chart
-        pie = PieChart()
-        pie.add_data(data, titles_from_data=True)
-        #pie.set_categories(labels)
-        pie.title = "PASS/FAIL Distribution"
-
-        chart_work_sheet.add_chart(pie, "A1")
+        pass_count = 0
+        fail_count = 0
+        for row in self.work_sheet.iter_rows(min_col=3, max_col=3, min_row=2, max_row=last_row - 1):
+            for cell in row:
+                if cell.value == "PASS":
+                    pass_count += 1
+                elif cell.value == "FAIL":
+                    fail_count += 1
+                else:
+                    print("ERROR: unknown value {}".format(cell.value))
+        return (pass_count, fail_count)
 
     def save(self):
         """