diff --git a/vm.c b/vm.c
index cd6e3e0b5c..f67bd30bdd 100644
--- a/vm.c
+++ b/vm.c
@@ -2336,7 +2336,9 @@ vm_exec_bottom_main(void *context)
     struct rb_vm_exec_context *ctx = (struct rb_vm_exec_context *)context;
 
     ctx->state = TAG_NONE;
-    ctx->result = vm_exec_core(ctx->ec);
+    if (UNDEF_P(ctx->result = jit_exec(ctx->ec))) {
+        ctx->result = vm_exec_core(ctx->ec);
+    }
     vm_exec_enter_vm_loop(ctx->ec, ctx, ctx->tag, true);
 }