diff --git a/variable.c b/variable.c
index 686056fdb4..085ba240e4 100644
--- a/variable.c
+++ b/variable.c
@@ -3357,7 +3357,7 @@ rb_const_get_0(VALUE klass, ID id, int exclude, int recurse, int visibility)
     if (!UNDEF_P(c)) {
         if (UNLIKELY(!rb_ractor_main_p())) {
             if (!rb_ractor_shareable_p(c)) {
-                rb_raise(rb_eRactorIsolationError, "can not access non-shareable objects in constant %"PRIsVALUE"::%s by non-main Ractor.", rb_class_path(found_in), rb_id2name(id));
+                rb_raise(rb_eRactorIsolationError, "can not access non-shareable objects in constant %"PRIsVALUE"::%"PRIsVALUE" by non-main Ractor.", rb_class_path(found_in), rb_id2str(id));
             }
         }
         return c;
diff --git a/vm_insnhelper.c b/vm_insnhelper.c
index d103146d1f..aa67e54d0a 100644
--- a/vm_insnhelper.c
+++ b/vm_insnhelper.c
@@ -1145,7 +1145,7 @@ vm_get_ev_const(rb_execution_context_t *ec, VALUE orig_klass, ID id, bool allow_
                             if (UNLIKELY(!rb_ractor_main_p())) {
                                 if (!rb_ractor_shareable_p(val)) {
                                     rb_raise(rb_eRactorIsolationError,
-                                             "can not access non-shareable objects in constant %"PRIsVALUE"::%s by non-main ractor.", rb_class_path(klass), rb_id2name(id));
+                                             "can not access non-shareable objects in constant %"PRIsVALUE"::%"PRIsVALUE" by non-main ractor.", rb_class_path(klass), rb_id2str(id));
                                 }
                             }
                             return val;
@@ -7575,4 +7575,3 @@ rb_vm_lvar_exposed(rb_execution_context_t *ec, int index)
     const rb_control_frame_t *cfp = ec->cfp;
     return cfp->ep[index];
 }
-