diff --git a/scripts/mbedtls_dev/ecp.py b/scripts/mbedtls_dev/ecp.py
index d4bfa85a3d..37c67a64d8 100644
--- a/scripts/mbedtls_dev/ecp.py
+++ b/scripts/mbedtls_dev/ecp.py
@@ -714,9 +714,9 @@ class EcpP448Raw(bignum_common.ModOperationCommon,
 
         # Maximum canonical P448 multiplication result
         ("fffffffffffffffffffffffffffffffffffffffffffffffffffffffd"
-         "ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
-         "00000000000000000000000000000000000000000000000000000002"
-         "00000000000000000000000000000000000000000000000000000001"),
+         "fffffffffffffffffffffffffffffffffffffffffffffffffffffffd"
+         "00000000000000000000000000000000000000000000000000000004"
+         "00000000000000000000000000000000000000000000000000000004"),
 
         # First 8 number generated by random.getrandbits(896) - seed(2,2)
         ("74667bffe202849da9643a295a9ac6decbd4d3e2d4dec9ef83f0be4e"