diff --git a/runtime/native/java_lang_System.cc b/runtime/native/java_lang_System.cc
index 6674db2..ea78e04 100644
--- a/runtime/native/java_lang_System.cc
+++ b/runtime/native/java_lang_System.cc
@@ -339,6 +339,9 @@
 }
 
 static jint System_identityHashCode(JNIEnv* env, jclass, jobject javaObject) {
+  if (javaObject == nullptr) {
+    return 0;
+  }
   ScopedFastNativeObjectAccess soa(env);
   mirror::Object* o = soa.Decode<mirror::Object*>(javaObject);
   return static_cast<jint>(o->IdentityHashCode());