diff --git a/contributors/design-proposals/auth/bound-service-account-tokens.md b/contributors/design-proposals/auth/bound-service-account-tokens.md
index c9c6064d5..961e17a28 100644
--- a/contributors/design-proposals/auth/bound-service-account-tokens.md
+++ b/contributors/design-proposals/auth/bound-service-account-tokens.md
@@ -143,7 +143,7 @@ field which the service account authenticator will validate.
 type TokenReviewSpec struct {
   // Token is the opaque bearer token.
   Token string
-  // Audiences is the identifier that the client identifies as.
+  // Audiences are the identifiers that the client identifies as.
   Audiences []string
 }
 ```