From 60c75e173a56fc52275bc8ea4c16cf2c3aa9d2e1 Mon Sep 17 00:00:00 2001
From: JonathanAmenechi <7217608+JonathanAmenechi@users.noreply.github.com>
Date: Mon, 29 Jul 2024 18:31:48 -0400
Subject: [PATCH] chore: ensure 0x is always prepended

---
 py_order_utils/builders/base_builder.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/py_order_utils/builders/base_builder.py b/py_order_utils/builders/base_builder.py
index 16e0577..79e4e72 100644
--- a/py_order_utils/builders/base_builder.py
+++ b/py_order_utils/builders/base_builder.py
@@ -29,7 +29,10 @@ def _create_struct_hash(self, order: EIP712Struct):
         """
         Creates an EIP712 compliant struct hash for the Order
         """
-        return "0x" + keccak(order.signable_bytes(domain=self.domain_separator)).hex()
+        struct_hash = keccak(order.signable_bytes(domain=self.domain_separator)).hex()
+        if len(struct_hash) > 2 and struct_hash[:2] != "0x":
+            struct_hash = f"0x{struct_hash}"
+        return struct_hash
 
     def sign(self, struct_hash):
         """