diff --git a/poetry/utils/setup_reader.py b/poetry/utils/setup_reader.py
index 7056fe47c9b..6af89bc7981 100644
--- a/poetry/utils/setup_reader.py
+++ b/poetry/utils/setup_reader.py
@@ -183,6 +183,7 @@ def _find_setup_call(
             func = value.func
             if not (isinstance(func, ast.Name) and func.id == "setup") and not (
                 isinstance(func, ast.Attribute)
+                and hasattr(func.value, "id")
                 and func.value.id == "setuptools"
                 and func.attr == "setup"
             ):