diff --git a/draft-ietf-privacypass-auth-scheme.md b/draft-ietf-privacypass-auth-scheme.md
index 74259c5a..858ae954 100644
--- a/draft-ietf-privacypass-auth-scheme.md
+++ b/draft-ietf-privacypass-auth-scheme.md
@@ -957,7 +957,7 @@ token-key-1 denotes the token-key for the second challenge in the list.
 
 The resulting wire-encoded WWW-Authentication header based on this
 list of challenges is then listed at the end. Line folding is only
-used to fit the document formatting constraints and not unsupported
+used to fit the document formatting constraints and not supported
 in actual requests.
 
 ~~~