diff --git a/.changeset/heavy-nails-juggle.md b/.changeset/heavy-nails-juggle.md
new file mode 100644
index 000000000..068631f67
--- /dev/null
+++ b/.changeset/heavy-nails-juggle.md
@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Fix bug where Astro's server runtime would end up in the browser
diff --git a/packages/astro/src/vite-plugin-jsx/index.ts b/packages/astro/src/vite-plugin-jsx/index.ts
index 3a6f47e86..f8f65743c 100644
--- a/packages/astro/src/vite-plugin-jsx/index.ts
+++ b/packages/astro/src/vite-plugin-jsx/index.ts
@@ -56,7 +56,10 @@ async function transformJSX({
 }: TransformJSXOptions): Promise<TransformResult> {
 	const { jsxTransformOptions } = renderer;
 	const options = await jsxTransformOptions!({ mode, ssr });
-	const plugins = [...(options.plugins || []), tagExportsPlugin({ rendererName: renderer.name })];
+	const plugins = [...(options.plugins || [])];
+	if (ssr) {
+		plugins.push(tagExportsPlugin({ rendererName: renderer.name }))
+	}
 	const result = await babel.transformAsync(code, {
 		presets: options.presets,
 		plugins,