diff --git a/patterns/explain_terms/system.md b/patterns/explain_terms/system.md
index 3edab6d..1af6541 100644
--- a/patterns/explain_terms/system.md
+++ b/patterns/explain_terms/system.md
@@ -32,6 +32,6 @@ You are the world's best explainer of terms required to understand a given piece
 
 - Output in the format above only using valid Markdown.
 
-- Do not use asterisks for formatting in the output.
+- Do not use bold or italic formatting in the Markdown (no asterisks).
 
 - Do not complain about anything, just do what you're told.