diff --git a/pkgs/jnigen/test/kotlin_test/kotlin/src/main/kotlin/com/github/dart_lang/jnigen/Nullability.kt b/pkgs/jnigen/test/kotlin_test/kotlin/src/main/kotlin/com/github/dart_lang/jnigen/Nullability.kt
index 73a56dfa0..243ddab51 100644
--- a/pkgs/jnigen/test/kotlin_test/kotlin/src/main/kotlin/com/github/dart_lang/jnigen/Nullability.kt
+++ b/pkgs/jnigen/test/kotlin_test/kotlin/src/main/kotlin/com/github/dart_lang/jnigen/Nullability.kt
@@ -76,4 +76,4 @@ class Nullability<T, U: Any>(val t: T, val u: U, var nullableU: U?) {
     inner class InnerClass<V> {
         fun f(t: T, u: U, v: V) {}
     }
-}
\ No newline at end of file
+}
diff --git a/pkgs/jnigen/test/kotlin_test/runtime_test_registrant.dart b/pkgs/jnigen/test/kotlin_test/runtime_test_registrant.dart
index d6f61e47b..7d7ac1ff9 100644
--- a/pkgs/jnigen/test/kotlin_test/runtime_test_registrant.dart
+++ b/pkgs/jnigen/test/kotlin_test/runtime_test_registrant.dart
@@ -226,6 +226,18 @@ void registerTests(String groupName, TestRunnerCallback test) {
             null,
           );
         });
+        test('Inner class', () {
+          using((arena) {
+            final obj = testObject(arena);
+            final innerObj =
+                Nullability_InnerClass<JString?, JString, JInteger>(obj,
+                    V: JInteger.type);
+            expect(
+              innerObj.f,
+              isA<void Function(JString?, JString, JInteger)>(),
+            );
+          });
+        });
       });
     });
   });