diff --git a/gc.c b/gc.c
index afa9227af6f4e7..0bf31188d1f933 100644
--- a/gc.c
+++ b/gc.c
@@ -10127,12 +10127,14 @@ gc_ref_update_imemo(rb_objspace_t *objspace, VALUE obj)
                 if (!is_live_object(objspace, cc->klass)) {
                     *((VALUE *)(&cc->klass)) = (VALUE)0;
                 }
-            }
 
-            if (cc->cme_) {
-                TYPED_UPDATE_IF_MOVED(objspace, struct rb_callable_method_entry_struct *, cc->cme_);
-                if (!is_live_object(objspace, (VALUE)cc->cme_)) {
-                    *((struct rb_callable_method_entry_struct **)(&cc->cme_)) = (struct rb_callable_method_entry_struct *)0;
+                // cc->cme_ is available if cc->klass is given
+
+                if (cc->cme_) {
+                    TYPED_UPDATE_IF_MOVED(objspace, struct rb_callable_method_entry_struct *, cc->cme_);
+                    if (!is_live_object(objspace, (VALUE)cc->cme_)) {
+                        *((struct rb_callable_method_entry_struct **)(&cc->cme_)) = (struct rb_callable_method_entry_struct *)0;
+                    }
                 }
             }
         }
diff --git a/iseq.c b/iseq.c
index c1dd3efc4c34e5..0c1b2c18e760bb 100644
--- a/iseq.c
+++ b/iseq.c
@@ -282,6 +282,29 @@ rb_iseq_mark_and_move_each_value(const rb_iseq_t *iseq, VALUE *original_iseq)
     }
 }
 
+static bool
+cc_is_active(const struct rb_callcache *cc, bool reference_updating)
+{
+    if (cc) {
+        if (reference_updating) {
+            cc = (const struct rb_callcache *)rb_gc_location((VALUE)cc);
+        }
+
+        if (vm_cc_markable(cc)) {
+            if (cc->klass) { // cc is not invalidated
+                const struct rb_callable_method_entry_struct *cme = vm_cc_cme(cc);
+                if (reference_updating) {
+                    cme = (const struct rb_callable_method_entry_struct *)rb_gc_location((VALUE)cme);
+                }
+                if (!METHOD_ENTRY_INVALIDATED(cme)) {
+                    return true;
+                }
+            }
+        }
+    }
+    return false;
+}
+
 void
 rb_iseq_mark_and_move(rb_iseq_t *iseq, bool reference_updating)
 {
@@ -310,27 +333,11 @@ rb_iseq_mark_and_move(rb_iseq_t *iseq, bool reference_updating)
 
                 if (cds[i].ci) rb_gc_mark_and_move_ptr(&cds[i].ci);
 
-                const struct rb_callcache *cc = cds[i].cc;
-                if (cc) {
-                    if (reference_updating) {
-                        cc = (const struct rb_callcache *)rb_gc_location((VALUE)cc);
-                    }
-
-                    if (vm_cc_markable(cc)) {
-                        VM_ASSERT((cc->flags & VM_CALLCACHE_ON_STACK) == 0);
-
-                        const struct rb_callable_method_entry_struct *cme = vm_cc_cme(cc);
-                        if (reference_updating) {
-                            cme = (const struct rb_callable_method_entry_struct *)rb_gc_location((VALUE)cme);
-                        }
-
-                        if (cc->klass && !METHOD_ENTRY_INVALIDATED(cme)) {
-                            rb_gc_mark_and_move_ptr(&cds[i].cc);
-                        }
-                        else {
-                            cds[i].cc = rb_vm_empty_cc();
-                        }
-                    }
+                if (cc_is_active(cds[i].cc, reference_updating)) {
+                    rb_gc_mark_and_move_ptr(&cds[i].cc);
+                }
+                else {
+                    cds[i].cc = rb_vm_empty_cc();
                 }
             }
         }