diff --git a/doc/data/messages/r/redefined-slots-in-subclass/bad.py b/doc/data/messages/r/redefined-slots-in-subclass/bad.py
new file mode 100644
index 0000000000..e47b2b8394
--- /dev/null
+++ b/doc/data/messages/r/redefined-slots-in-subclass/bad.py
@@ -0,0 +1,6 @@
+class Base:
+    __slots__ = ("a", "b")
+
+
+class Subclass(Base):
+    __slots__ = ("a", "d")  # [redefined-slots-in-subclass]
diff --git a/doc/data/messages/r/redefined-slots-in-subclass/good.py b/doc/data/messages/r/redefined-slots-in-subclass/good.py
new file mode 100644
index 0000000000..8f2ac3b97e
--- /dev/null
+++ b/doc/data/messages/r/redefined-slots-in-subclass/good.py
@@ -0,0 +1,6 @@
+class Base:
+    __slots__ = ("a", "b")
+
+
+class Subclass(Base):
+    __slots__ = ("c", "d")