diff --git a/docs/lessons/seismograph/activity.md b/docs/lessons/seismograph/activity.md
index 75769d86..40cee67a 100644
--- a/docs/lessons/seismograph/activity.md
+++ b/docs/lessons/seismograph/activity.md
@@ -26,7 +26,7 @@ Step 2. Fasten Tape: Fasten tape to the micro USB cable and to the plate. Attach
 
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-Coding: The seismograph has been built. We are ready to program the micro:bit to be a seismograph! 
+Computer Science: The seismograph has been built. We are ready to program the micro:bit to be a seismograph! 
 
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