diff --git a/src/dexorder/contract/__init__.py b/src/dexorder/contract/__init__.py
index d7f9935..fb3ef83 100644
--- a/src/dexorder/contract/__init__.py
+++ b/src/dexorder/contract/__init__.py
@@ -6,14 +6,10 @@ from .contract_proxy import ContractProxy
 
 
 def get_contract_data(name):
-    try:
-        # try the interface file first
-        with open(f'../contract/out/I{name}.sol/I{name}.json', 'rt') as file:
-            return json.load(file)
-    except FileNotFoundError:
-        # if no interface exists, use the plain name
-        with open(f'../contract/out/{name}.sol/{name}.json', 'rt') as file:
-            return json.load(file)
+    # if name == 'Vault':
+    #     name = 'IVault'
+    with open(f'../contract/out/{name}.sol/{name}.json', 'rt') as file:
+        return json.load(file)
 
 
 def get_contract_event(contract_name:str, event_name:str):