diff --git a/test/valid-data/lowercase/main.ts b/test/valid-data/lowercase/main.ts
new file mode 100644
index 000000000..c766c3a2a
--- /dev/null
+++ b/test/valid-data/lowercase/main.ts
@@ -0,0 +1,4 @@
+/** The built-in color schemes, cased. */
+type Foo = "Accent";
+
+export type MyType = Lowercase<Foo>;
diff --git a/test/valid-data/lowercase/schema.json b/test/valid-data/lowercase/schema.json
new file mode 100644
index 000000000..96f16e2a8
--- /dev/null
+++ b/test/valid-data/lowercase/schema.json
@@ -0,0 +1,10 @@
+{
+    "$ref": "#/definitions/MyType",
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "definitions": {
+      "MyType": {
+        "const": "accent",
+        "type": "string"
+      }
+    }
+  }