diff --git a/pkgs/racket-test-core/tests/racket/struct.rktl b/pkgs/racket-test-core/tests/racket/struct.rktl
index 1fa1b824a6..ff6374c7d3 100644
--- a/pkgs/racket-test-core/tests/racket/struct.rktl
+++ b/pkgs/racket-test-core/tests/racket/struct.rktl
@@ -499,6 +499,8 @@
 (syntax-test #'(define-struct a (b c) #:property 1 10 #:prefab))
 (syntax-test #'(define-struct a (b c) #:sealed #:prefab))
 (syntax-test #'(define-struct a (b c) #:prefab #:sealed))
+(syntax-test #'(define-struct a (b c) #:prefab #:authentic))
+(syntax-test #'(define-struct a (b c) #:authentic #:prefab))
 
 (define-struct base0 ())
 (define-struct base1 (a))
diff --git a/racket/collects/racket/private/define-struct.rkt b/racket/collects/racket/private/define-struct.rkt
index b185c9c4bb..4c6c259feb 100644
--- a/racket/collects/racket/private/define-struct.rkt
+++ b/racket/collects/racket/private/define-struct.rkt
@@ -350,6 +350,8 @@
                 (extend-config config '#:inspector #'#f)
                 nongen?)]
          [(eq? '#:authentic (syntax-e (car p)))
+          (when nongen?
+            (bad "cannot use" (car p) " for prefab structure type"))
           (when (lookup config '#:authentic)
             (bad "multiple" "#:authentic" "s" (car p)))
           (loop (cdr p)
@@ -403,6 +405,8 @@
             (bad "cannot use" (car p) " for a sealed structure type"))
           (when (lookup config '#:guard)
             (bad "cannot use" (car p) " for a structure type with a guard"))
+          (when (lookup config '#:authentic)
+            (bad "cannot use" (car p) " for an authentic structure type"))
           (loop (cdr p)
                 (extend-config config '#:inspector #''prefab)
                 #t)]