diff --git a/kdc/kaserver.c b/kdc/kaserver.c
index 6a7d77c80..8f3c3e02e 100644
--- a/kdc/kaserver.c
+++ b/kdc/kaserver.c
@@ -366,7 +366,7 @@ create_reply_ticket (krb5_context context,
 	DES_cblock deskey;
 	
 	memcpy (&deskey, key->keyvalue.data, sizeof(deskey));
-	DES_set_key (&deskey, &schedule);
+	DES_set_key_unchecked (&deskey, &schedule);
 	DES_pcbc_encrypt (enc_data.data,
 			  enc_data.data,
 			  enc_data.length,
@@ -524,7 +524,7 @@ do_authenticate (krb5_context context,
 	
 	/* try to decode the `request' */
 	memcpy (&key, ckey->key.keyvalue.data, sizeof(key));
-	DES_set_key (&key, &schedule);
+	DES_set_key_unchecked (&key, &schedule);
 	DES_pcbc_encrypt (request.data,
 			  request.data,
 			  request.length,
@@ -801,7 +801,7 @@ do_getticket (krb5_context context,
 
     /* decrypt the times */
     memcpy(&session, ad.session.keyvalue.data, sizeof(session));
-    DES_set_key (&session, &schedule);
+    DES_set_key_unchecked (&session, &schedule);
     DES_ecb_encrypt (times.data,
 		     times.data,
 		     &schedule,