diff --git a/include/mruby.h b/include/mruby.h
index 7a533cfa7..3ed86f8c7 100644
--- a/include/mruby.h
+++ b/include/mruby.h
@@ -1458,8 +1458,6 @@ MRB_API mrb_value mrb_fiber_new(mrb_state *mrb, const struct RProc *proc);
  * Implemented in mruby-fiber
  *
  * Switches to the specified fiber and executes. Like the `Fiber#resume` method.
- *
- * @note It can only be called before entering the mruby VM (e.g. in the `main()` function).
  */
 MRB_API mrb_value mrb_fiber_resume(mrb_state *mrb, mrb_value fib, mrb_int argc, const mrb_value *argv);
 
diff --git a/mrbgems/mruby-fiber/src/fiber.c b/mrbgems/mruby-fiber/src/fiber.c
index 62bcbc301..d9718121d 100644
--- a/mrbgems/mruby-fiber/src/fiber.c
+++ b/mrbgems/mruby-fiber/src/fiber.c
@@ -301,19 +301,19 @@ fiber_switch(mrb_state *mrb, mrb_value self, mrb_int len, const mrb_value *a, mr
  *  to the next <code>Fiber.yield</code> statement inside the fiber's block
  *  or to the block value if it runs to completion without any
  *  <code>Fiber.yield</code>
- *
- *  This method cannot be called from C using <code>mrb_funcall()</code>.
- *  Use <code>mrb_fiber_resume()</code> function instead.
  */
 static mrb_value
 fiber_resume(mrb_state *mrb, mrb_value self)
 {
   const mrb_value *a;
   mrb_int len;
+  mrb_bool vmexec = FALSE;
 
-  fiber_check_cfunc(mrb, mrb->c);
   mrb_get_args(mrb, "*!", &a, &len);
-  return fiber_switch(mrb, self, len, a, TRUE, FALSE);
+  if (mrb->c->ci->cci > 0) {
+    vmexec = TRUE;
+  }
+  return fiber_switch(mrb, self, len, a, TRUE, vmexec);
 }
 
 MRB_API mrb_value