diff --git a/docs/guidelines/content/unwelcome-concepts.md b/docs/guidelines/content/unwelcome-concepts.md
index b0ec114a..0f48bffa 100644
--- a/docs/guidelines/content/unwelcome-concepts.md
+++ b/docs/guidelines/content/unwelcome-concepts.md
@@ -66,7 +66,7 @@ When these are acceptable:
 
 - `[Subset - Multi]` sets.
 
-## Requires Complete Perfection
+## Requires Complete Perfection Over a Long Session
 
 Achievements that require a **long task** where the slightest mistake will end in failing the challenge. Especially challenges where randomness and other variation in game behavior makes anticipating actions extra difficult.