diff --git a/docs/lessons/charting/acceleration.md b/docs/lessons/charting/acceleration.md
index 0e1ec151..57701c51 100644
--- a/docs/lessons/charting/acceleration.md
+++ b/docs/lessons/charting/acceleration.md
@@ -4,7 +4,7 @@ Measure the acceleration on the micro:bit in the "x" direction.
 
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-Welcome! This activity will teach how to use the micro:bit to chart the second micro:bit's acceleration in the "x" direction. Let's get started!
+Welcome! This activity will teach how to use the micro:bit to chart the acceleration in the "x" direction. Let's get started!
 
 
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