diff --git a/src/erc7730/common/abi.py b/src/erc7730/common/abi.py
index c4b9151..f81000f 100644
--- a/src/erc7730/common/abi.py
+++ b/src/erc7730/common/abi.py
@@ -132,6 +132,6 @@ def get_functions(abis: list[ABI]) -> Functions:
     for abi in abis:
         if abi.type == "function":
             functions.functions[function_to_selector(abi)] = abi
-            if abi.name in ("proxyType", "getImplementation", "implementation"):
+            if abi.name in ("proxyType", "getImplementation", "implementation", "proxy__getImplementation"):
                 functions.proxy = True
     return functions