diff --git a/test/core/definitions_test.dart b/test/core/definitions_test.dart
index e1db1f00..3327cec6 100644
--- a/test/core/definitions_test.dart
+++ b/test/core/definitions_test.dart
@@ -660,4 +660,22 @@ void main() {
       throwsA(isA<FormatException>()),
     );
   });
+
+  test("Should throw FormatExceptions for wrong array field types", () {
+    final invalidThingDescription = {
+      "@context": ["https://www.w3.org/2022/wot/td/v1.1"],
+      "title": "Thingweb WoT Thing",
+      "security": 42,
+      "securityDefinitions": {
+        "nosec_sc": {
+          "scheme": "nosec",
+        },
+      },
+    };
+
+    expect(
+      () => ThingDescription.fromJson(invalidThingDescription),
+      throwsA(isA<FormatException>()),
+    );
+  });
 }