diff --git a/encoding/openapi/testdata/nested.cue b/encoding/openapi/testdata/nested.cue
new file mode 100644
index 0000000..f1343e0
--- /dev/null
+++ b/encoding/openapi/testdata/nested.cue
@@ -0,0 +1,8 @@
+package foo
+
+Struct :: {
+	T :: int
+
+	a?: T
+	b?: T
+}