diff --git a/jwtauth.go b/jwtauth.go
index 3d0237a..0e7641e 100644
--- a/jwtauth.go
+++ b/jwtauth.go
@@ -110,7 +110,7 @@ func VerifyRequest(ja *JWTAuth, r *http.Request, findTokenFns ...func(r *http.Re
 				return token, ErrExpired
 			} else if verr.Errors&jwt.ValidationErrorIssuedAt > 0 {
 				return token, ErrIATInvalid
-			} else if verr.Errors&jwt.ValidationErrorIssuedAt > 0 {
+			} else if verr.Errors&jwt.ValidationErrorNotValidYet > 0 {
 				return token, ErrNBFInvalid
 			}
 		}