diff --git a/session_4/session_4.Rmd b/session_4/session_4.Rmd
index 9a0be9687a74b23f6007c9b47213aed4c1d9e613..87b4416c9c6d7b5208ece987642c4a170a555332 100644
--- a/session_4/session_4.Rmd
+++ b/session_4/session_4.Rmd
@@ -401,8 +401,9 @@ mutate(
     sched_dep_time %% 100
 )
 ```
-</details>
 </p>
+</details>
+
 
 ## Useful creation functions