diff --git a/src/methodCallBaton.cpp b/src/methodCallBaton.cpp
index 61e16189..08119949 100644
--- a/src/methodCallBaton.cpp
+++ b/src/methodCallBaton.cpp
@@ -236,5 +236,8 @@ InstanceMethodCallBaton::InstanceMethodCallBaton(
 }
 
 InstanceMethodCallBaton::~InstanceMethodCallBaton() {
-  m_javaObject->Unref();
+  if (m_javaObject) {
+    m_javaObject->Unref();
+    m_javaObject = NULL;
+  }
 }