diff --git a/docs/lessons/charting/activity.md b/docs/lessons/charting/activity.md
index 7e7c8e16..6f8301ea 100644
--- a/docs/lessons/charting/activity.md
+++ b/docs/lessons/charting/activity.md
@@ -61,7 +61,7 @@ After running this simulatation several seconds by moving the micro:bit side to
 ### ~
 Finally, you must open the Excel CSV file by clicking on the data.xls file that was downloaded to Downloads Folder. 
 
-![](/static/mb/data2.png)
+![](/static/mb/data3.png)
 
 ### ~
 Have fun reviewing your simulation and analyze the acceleration by chart the Excel data using Excel.
diff --git a/docs/static/mb/lessons/data3.png b/docs/static/mb/lessons/data3.png
new file mode 100644
index 00000000..c312cf1c
Binary files /dev/null and b/docs/static/mb/lessons/data3.png differ