diff --git a/lib/krb5/crypto.c b/lib/krb5/crypto.c
index f7eecb6a8..36e80f345 100644
--- a/lib/krb5/crypto.c
+++ b/lib/krb5/crypto.c
@@ -2278,8 +2278,9 @@ krb5_get_wrapped_length (krb5_context context,
     size_t blocksize = et->blocksize;
     size_t res;
 
-    res = (data_len + blocksize - 1) / blocksize * blocksize;
-    res = res + et->confoundersize + et->cksumtype->checksumsize;
+    res =  et->confoundersize + data_len;
+    res =  (res + blocksize - 1) / blocksize * blocksize;
+    res += et->cksumtype->checksumsize;
     return res;
 }