diff --git a/pyi.py b/pyi.py
index dae51259..d9abee95 100644
--- a/pyi.py
+++ b/pyi.py
@@ -559,6 +559,8 @@ def visit_Subscript(self, node: ast.Subscript) -> None:
         if isinstance(node.slice, ast.Tuple):
             self._visit_slice_tuple(node.slice, value_id)
         else:
+            if value_id in ("Tuple", "tuple"):
+                self.error(node, Y032)
             self.visit(node.slice)
 
     def _visit_slice_tuple(self, node: ast.Tuple, parent: str | None) -> None:
@@ -980,3 +982,4 @@ def parse_options(cls, optmanager, options, extra_args):
 Y029 = "Y029 Defining __repr__ or __str__ in a stub is almost always redundant"
 Y030 = "Y030 Multiple Literal members in a union. {suggestion}"
 Y031 = "Y031 Use class-based syntax for TypedDicts where possible"
+Y032 = "Y032 Single-element tuple"