diff --git a/Docs/contributing.md b/Docs/contributing.md
index a142b2d6f1..a8dd7cf6bb 100644
--- a/Docs/contributing.md
+++ b/Docs/contributing.md
@@ -19,6 +19,8 @@ If you're a few characters over then don't worry too much.
 Documentation comments should also be formatted to a 100 character length to help keep them 
 readable.
 
+**DO NOT USE #REGIONS** full stop.
+
 ## Pull requests ##
 
 A single pull request should be submitted for each change. If you're making more than one change,