diff --git a/lib/krb5/keytab.c b/lib/krb5/keytab.c
index 2e0a319e2..fef18c13b 100644
--- a/lib/krb5/keytab.c
+++ b/lib/krb5/keytab.c
@@ -142,7 +142,7 @@ krb5_kt_close(krb5_context context,
 krb5_error_code
 krb5_kt_get_entry(krb5_context context,
 		  krb5_keytab id,
-		  krb5_principal principal,
+		  krb5_const_principal principal,
 		  krb5_kvno kvno,
 		  krb5_keytype keytype,
 		  krb5_keytab_entry *entry)