diff --git a/packages/core/src/css/ssr-component.tsx b/packages/core/src/css/ssr-component.tsx
index 13a96cda..9a07d5c6 100644
--- a/packages/core/src/css/ssr-component.tsx
+++ b/packages/core/src/css/ssr-component.tsx
@@ -1,4 +1,5 @@
 /** @jsxRuntime classic */
+/** @jsx jsx */
 import { jsx, SxProps } from '@theme-ui/core'
 import { ThemeUIStyleObject } from '@theme-ui/css'
 import React, { ComponentProps, ComponentType, Fragment } from 'react'