diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 6aac3cb878..59ec3f311b 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -20,8 +20,8 @@ If AI is used to generate any portion of the code, contributors must adhere to t
 
 1. Explicitly disclose the manner in which AI was employed.
 2. Check for an existing PR addressing the same change; if one exists, comment there to work with its author instead of opening a duplicate.
-3. Perform a comprehensive manual review prior to submitting the pull request.
-4. Be prepared to explain every line of code they submitted when asked about it by a maintainer.
+3. Perform a comprehensive manual review prior to submitting the pull request. A proper code review usually takes something like one hour per 200-400 LOC and you should be spending **at least that much time on code review alone**.
+4. Be prepared to explain every line of code you submit when asked about it by a maintainer.
 5. It is strictly prohibited to use AI to write your posts for you (bug reports, feature requests, pull request descriptions, Github discussions, responding to humans, ...).
 
 For more info, please refer to the [AGENTS.md](AGENTS.md) file.