diff --git a/runtime/quick/inline_method_analyser.h b/runtime/quick/inline_method_analyser.h
index 8e1a408..277a01e 100644
--- a/runtime/quick/inline_method_analyser.h
+++ b/runtime/quick/inline_method_analyser.h
@@ -98,10 +98,10 @@
   // opcode-Instruction::IPUT for IPUTs. This is because the runtime
   // doesn't know the OpSize enumeration.
   uint16_t op_variant : 3;
+  uint16_t method_is_static : 1;
   uint16_t object_arg : 4;
   uint16_t src_arg : 4;  // iput only
-  uint16_t method_is_static : 1;
-  uint16_t reserved : 4;
+  uint16_t return_arg_plus1 : 4;  // iput only, method argument to return + 1, 0 = return void.
   uint16_t field_idx;
   uint32_t is_volatile : 1;
   uint32_t field_offset : 31;