diff --git a/src/test/java/targetast/TestComplete.java b/src/test/java/targetast/TestComplete.java
index 83ea8ec4..c2b41371 100644
--- a/src/test/java/targetast/TestComplete.java
+++ b/src/test/java/targetast/TestComplete.java
@@ -464,4 +464,10 @@ public class TestComplete {
         var classFiles = generateClassFiles("Y.jav", new ByteArrayClassLoader());
         var instance = classFiles.get("Y").getDeclaredConstructor().newInstance();
     }
+
+    @Test
+    public void boxTest() throws Exception {
+        var classFiles = generateClassFiles("Box.jav", new ByteArrayClassLoader());
+        var instance = classFiles.get("Box_Main").getDeclaredConstructor().newInstance();
+    }
 }
diff --git a/src/test/resources/bytecode/javFiles/Box.jav b/src/test/resources/bytecode/javFiles/Box.jav
new file mode 100644
index 00000000..e83bde6d
--- /dev/null
+++ b/src/test/resources/bytecode/javFiles/Box.jav
@@ -0,0 +1,11 @@
+class Box<A> {
+    void m(A a) { }
+}
+
+class B { }
+class Box_Main extends B {
+    m(b) {
+       b.m(new Box_Main());
+       b.m(new B());
+    }
+}