diff --git a/tests/functional/r/regression/regression_4439.py b/tests/functional/r/regression/regression_4439.py
new file mode 100644
index 00000000000..966cc80067e
--- /dev/null
+++ b/tests/functional/r/regression/regression_4439.py
@@ -0,0 +1,13 @@
+"""AttributeError: 'Subscript' object has no attribute 'name' """
+# pylint: disable=missing-docstring
+
+from typing import Optional
+
+from attr import attrib, attrs
+
+
+@attrs()
+class User:
+    name: str = attrib()
+    age: int = attrib()
+    occupation = Optional[str] = attrib(default=None) # [unsupported-assignment-operation]
diff --git a/tests/functional/r/regression/regression_4439.txt b/tests/functional/r/regression/regression_4439.txt
new file mode 100644
index 00000000000..1fe96738d4a
--- /dev/null
+++ b/tests/functional/r/regression/regression_4439.txt
@@ -0,0 +1 @@
+unsupported-assignment-operation:13:17:User:'Optional' does not support item assignment:HIGH