diff --git a/runtime/interpreter/interpreter.cc b/runtime/interpreter/interpreter.cc
index f574a0f..02a9aa6 100644
--- a/runtime/interpreter/interpreter.cc
+++ b/runtime/interpreter/interpreter.cc
@@ -356,7 +356,7 @@
     DCHECK_LT(shorty_pos + 1, mh.GetShortyLength());
     switch (shorty[shorty_pos + 1]) {
       case 'L': {
-        Object* o = reinterpret_cast<Object*>(args[arg_pos]);
+        Object* o = reinterpret_cast<StackReference<Object>*>(&args[arg_pos])->AsMirrorPtr();
         shadow_frame->SetVRegReference(cur_reg, o);
         break;
       }