diff --git a/CONTRIBUTION.md b/CONTRIBUTION.md
index a9cb80f49..bed0ef9fc 100644
--- a/CONTRIBUTION.md
+++ b/CONTRIBUTION.md
@@ -38,7 +38,8 @@ my_new_cpp_class.cpp    is correct format
 - File name validation will run on docker to ensure the validity.
 
 #### New Directory guidelines 
-- Use lowercase words with ``"_"`` as separator ( no spaces or '-' allowed )
+- We recommend adding files to existing directories as mush as possible.
+- Use lowercase words with ``"_"`` as separator ( no spaces or ```"-"``` allowed )
 - For instance
 ```
 SomeNew Fancy-Category          is incorrect
@@ -80,4 +81,4 @@ Common prefixes:
 - Checkout our [pull request template](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/.github/pull_request_template.md)
 
 - Most importantly,
-    - Happy coding!
\ No newline at end of file
+    - Happy coding!