diff --git a/debug_counter.h b/debug_counter.h
index 9f7a81720e6534..752a3de02b475b 100644
--- a/debug_counter.h
+++ b/debug_counter.h
@@ -123,6 +123,7 @@ RB_DEBUG_COUNTER(ivar_set_ic_hit)
 RB_DEBUG_COUNTER(ivar_set_ic_miss)
 RB_DEBUG_COUNTER(ivar_set_ic_miss_serial)
 RB_DEBUG_COUNTER(ivar_set_ic_miss_unset)
+RB_DEBUG_COUNTER(ivar_set_ic_miss_iv_hit)
 RB_DEBUG_COUNTER(ivar_set_ic_miss_noobject)
 RB_DEBUG_COUNTER(ivar_get_base)
 RB_DEBUG_COUNTER(ivar_set_base)
diff --git a/vm_insnhelper.c b/vm_insnhelper.c
index ea25de629f8d67..74e992a5000bae 100644
--- a/vm_insnhelper.c
+++ b/vm_insnhelper.c
@@ -1246,6 +1246,7 @@ vm_setivar(VALUE obj, ID id, VALUE val, const rb_iseq_t *iseq, IVC ic, const str
                     ptr = ROBJECT_IVPTR(obj);
                 }
                 RB_OBJ_WRITE(obj, &ptr[index], val);
+                RB_DEBUG_COUNTER_INC(ivar_set_ic_miss_iv_hit);
 
                 return val;
 	    }