diff --git a/runtime/mirror/array.cc b/runtime/mirror/array.cc
index aee48cc..1aa38dd 100644
--- a/runtime/mirror/array.cc
+++ b/runtime/mirror/array.cc
@@ -121,7 +121,7 @@
   art::ThrowArrayIndexOutOfBoundsException(index, GetLength());
 }
 
-void Array::ThrowArrayStoreException(Object* object) {
+void Array::ThrowArrayStoreException(ObjPtr<Object> object) {
   art::ThrowArrayStoreException(object->GetClass(), this->GetClass());
 }