1 files changed, 4 insertions, 5 deletions
diff --git a/vm_core.h b/vm_core.h
index 7ad00045b3..4bb5cc2976 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -131,9 +131,8 @@ typedef struct rb_compile_option_struct rb_compile_option_t;
 
 
 struct iseq_inline_cache_entry {
-    vm_state_version_t ic_vmstat;
-    vm_state_version_t ic_seq;
-    VALUE ic_class;
+    rb_serial_t ic_constant_serial;
+    rb_serial_t ic_class_serial;
     union {
 	size_t index;
 	VALUE value;
@@ -162,8 +161,8 @@ typedef struct rb_call_info_struct {
     rb_iseq_t *blockiseq;
 
     /* inline cache: keys */
-    vm_state_version_t method_state;
-    vm_state_version_t seq;
+    rb_serial_t method_serial;
+    rb_serial_t class_serial;
     VALUE klass;
 
     /* inline cache: values */