diff --git a/_episodes/02-formatting.md b/_episodes/02-formatting.md
index 672f5255b685c636037578da34921d5d9b58c787..bb60fcc727ae8a10b56513996c5844c2eefbe632 100644
--- a/_episodes/02-formatting.md
+++ b/_episodes/02-formatting.md
@@ -210,6 +210,11 @@ for the following special blockquotes:
 > Prerequisites.
 {: .prereq}
 
+> ## `.solution`
+>
+> Exercise solution.
+{: .solution}
+
 > ## `.testimonial`
 >
 > A laudatory quote from a user.