diff --git a/src/errors.rs b/src/errors.rs
index 1f6c17f..c6809ed 100644
--- a/src/errors.rs
+++ b/src/errors.rs
@@ -56,7 +56,7 @@ pub enum ErrorKind {
     InvalidIssuer,
     /// When a token’s `aud` claim does not match one of the expected audience values
     InvalidAudience,
-    /// When a token’s `aud` claim does not match one of the expected audience values
+    /// When a token’s `sub` claim does not match one of the expected audience values
     InvalidSubject,
     /// When a token’s nbf claim represents a time in the future
     ImmatureSignature,