diff --git a/src/classpath-openjdk.cpp b/src/classpath-openjdk.cpp
index ae7bba5264..c244e79d1d 100644
--- a/src/classpath-openjdk.cpp
+++ b/src/classpath-openjdk.cpp
@@ -4674,6 +4674,10 @@ jvmInvokeMethod(Thread* t, uintptr_t* arguments)
      (t, jclassVmClass(t, jmethodClazz(t, *method))),
       jmethodSlot(t, *method));
 
+  if (instance and not instanceOf(t, methodClass(t, vmMethod), *instance)) {
+    throwNew(t, Machine::IllegalArgumentExceptionType);
+  }
+
   return reinterpret_cast<uint64_t>
     (makeLocalReference
      (t, invoke