diff --git a/mypy/checkexpr.py b/mypy/checkexpr.py
index 8d1833a772e2..b06aaa8f89f5 100644
--- a/mypy/checkexpr.py
+++ b/mypy/checkexpr.py
@@ -3814,6 +3814,7 @@ def check_method_call_by_name(
             is_operator=True,
             msg=self.msg,
             original_type=original_type,
+            self_type=base_type,
             chk=self.chk,
             in_literal_context=self.is_literal_context(),
         )