diff --git a/src/diagrams/common/common.spec.js b/src/diagrams/common/common.spec.js
index 01033d3ce..b9fac5fba 100644
--- a/src/diagrams/common/common.spec.js
+++ b/src/diagrams/common/common.spec.js
@@ -106,7 +106,7 @@ describe('Sanitize text', function () {
 
 describe('generic parser', function () {
   it('should parse generic types', function () {
-    const result = parseGenericTypes('test~T~');
-    expect(result).toEqual('test<T>');
+    expect(parseGenericTypes('test~T~')).toEqual('test<T>');
+    expect(parseGenericTypes('test~Array~Array~string~~~')).toEqual('test<Array<Array<string>>>');
   });
 });