diff --git a/scripts/mbedtls_dev/ecp.py b/scripts/mbedtls_dev/ecp.py
index 4f529d15c..e01b80fbc 100644
--- a/scripts/mbedtls_dev/ecp.py
+++ b/scripts/mbedtls_dev/ecp.py
@@ -99,11 +99,11 @@ class EcpP224R1Raw(bignum_common.ModOperationCommon,
 
         # Generate an overflow during reduction
         ("00000000000000000000000000010000000070000000002000001000"
-         "FFFFFFFFFFFF9FFFFFFFFFE00000EFFF000070000000002000001003"),
+         "ffffffffffff9fffffffffe00000efff000070000000002000001003"),
 
         # Generate an underflow during reduction
         ("00000001000000000000000000000000000000000000000000000000"
-         "00000000000DC0000000000000000001000000010000000100000003"),
+         "00000000000dc0000000000000000001000000010000000100000003"),
 
         # First 8 number generated by random.getrandbits(448) - seed(2,2)
         ("da94e3e8ab73738fcf1822ffbc6887782b491044d5e341245c6e4337"
@@ -140,6 +140,7 @@ class EcpP224R1Raw(bignum_common.ModOperationCommon,
     @property
     def is_valid(self) -> bool:
         return True
+
 class EcpP521R1Raw(bignum_common.ModOperationCommon,
                    EcpTarget):
     """Test cases for ecp quasi_reduction()."""