diff --git a/src/calling_convention_x86.cc b/src/calling_convention_x86.cc
index 9420849..ed95eb0 100644
--- a/src/calling_convention_x86.cc
+++ b/src/calling_convention_x86.cc
@@ -43,7 +43,9 @@
 }
 
 FrameOffset ManagedRuntimeCallingConvention::CurrentParamStackOffset() {
-  return FrameOffset(displacement_.Int32Value() + (itr_slots_ * kPointerSize));
+  return FrameOffset(displacement_.Int32Value() +   // displacement
+                     kPointerSize +                 // Method*
+                     (itr_slots_ * kPointerSize));  // offset into in args
 }
 
 // JNI calling convention