diff --git a/lib/krb5/mit_glue.c b/lib/krb5/mit_glue.c
index 333d0e532..bf035569e 100644
--- a/lib/krb5/mit_glue.c
+++ b/lib/krb5/mit_glue.c
@@ -329,7 +329,14 @@ krb5_c_make_random_key(krb5_context context,
 krb5_error_code KRB5_LIB_FUNCTION
 krb5_c_keylength(krb5_context context,
 		 krb5_enctype enctype,
-		 size_t *len)
+		 size_t *ilen,
+		 size_t *keylen)
 {
+    krb5_error_code ret;
+
+    ret = krb5_enctype_bits(context, enctype, ilen);
+    if (ret)
+	return ret;
+    *ilen = (*ilen + 7) / 8;
     return krb5_enctype_keysize(context, enctype, len);
 }