diff --git a/README.md b/README.md
index 9dcef10c6b71b2f4b4fd25eaf6f0c0815b73f90f..88cdffbfebce6855d0095728c9b5eb653322e68e 100644
--- a/README.md
+++ b/README.md
@@ -346,7 +346,7 @@ file, but again, we're trying to avoid those.
     ---
     Paragraph(s) of introductory material.
 
-    > ## Prerequisites {.prereq}
+    > ## Prerequisites
     >
     > What learners need to know before tackling this lesson.