diff --git a/EIPS/eip-634.md b/EIPS/eip-634.md
index c79ec485..c9aaf9b0 100644
--- a/EIPS/eip-634.md
+++ b/EIPS/eip-634.md
@@ -46,8 +46,8 @@ services must be prefixed with `vnd.`.
 - **description** - A description of the name
 - **notice** - A notice regarding this name; 
 - **keywords** - A list of comma-separated keywords, ordered by most significant first; clients that interpresent this field may choose a threshold beyond which to ignore
-- **vnd.twitter** - a twitter username (should it be prefixed with an @?)
-- **vnd.github** - a GitHub username
+- **vnd.twitter** - a twitter username (SHOULD not be prefixed with an @ symbol)
+- **vnd.github** - a GitHub username (SHOULD not be prefixed with an @ symbol)
 
 
 ## Rationale