diff --git a/E13RoomShoppingList/README.md b/E13RoomShoppingList/README.md
index 3663e5c6073087664156b9b25f4189f250ebf105..2a60c64b327a181239ebd49abc3daf879f7b08d0 100644
--- a/E13RoomShoppingList/README.md
+++ b/E13RoomShoppingList/README.md
@@ -1,3 +1,5 @@
 App preview [video](https://youtu.be/Czxn8S-dV_4)
+
 Added Swipe gestures [video](https://youtu.be/YkxQYiLJszs)
-Added Ads in the app [video](https://youtu.be/tIHtPUAG0BI)
\ No newline at end of file
+
+Exercise 19: Added Ads in the app [video](https://youtu.be/tIHtPUAG0BI)
diff --git a/README.md b/README.md
index 579bf69fefe043c34d804473f6f31603cf860e64..8cb15ec1c278acdceb4fda81095576766ae5998c 100644
--- a/README.md
+++ b/README.md
@@ -19,8 +19,8 @@ Iftakhar Husan
 - [Exercise 15][ex15] requirements are satisfied by [Exercise 13][ex13]
 - [Exercise 16][ex16]
 - [Exercise 17][ex17]
-- [Exercise 18's][ex9] requirements are satisfied by [Exercise 8][ex8]
-- [Exercise 19][ex19] requirements are satisfied by [Exercise 13][ex13]
+- [Exercise 18's][ex18] requirements are satisfied by [Exercise 8][ex8]
+- [Exercise 19's][ex19] requirements are satisfied by [Exercise 13][ex13]
 - [Exercise 20][ex20]
 
 [ex1]: ./e01-first-application/