diff --git a/src/guidelines/performance/M-FAST-HASHER.md b/src/guidelines/performance/M-FAST-HASHER.md
index 9f94cc1..eafe8f2 100644
--- a/src/guidelines/performance/M-FAST-HASHER.md
+++ b/src/guidelines/performance/M-FAST-HASHER.md
@@ -14,3 +14,4 @@ let lookup = HashMap::<UserID, Data>::with_capacity(1024);
 
 // Good, uses faster foldhash for internal keys.
 let lookup = foldhash::HashMap<UserID, Data>::with_capacity(1024);
+```