1 files changed, 1 insertions, 1 deletions
diff --git a/method.h b/method.h
index 0b07342615..4d1cf3e6fe 100644
--- a/method.h
+++ b/method.h
@@ -60,7 +60,7 @@ typedef struct rb_iseq_struct rb_iseq_t;
 typedef struct rb_method_iseq_struct {
     rb_iseq_t * const iseqptr;                    /* should be separated from iseqval */
     rb_cref_t * const cref;                       /* shoudl be marked */
-} rb_method_iseq_t;
+} rb_method_iseq_t; /* check rb_add_method_iseq() when modify the fields */
 
 typedef struct rb_method_cfunc_struct {
     VALUE (*func)(ANYARGS);