diff --git a/packages/sanity/src/_internal/cli/server/getViteConfig.ts b/packages/sanity/src/_internal/cli/server/getViteConfig.ts
index 50dd3aa7422..12d84f0a179 100644
--- a/packages/sanity/src/_internal/cli/server/getViteConfig.ts
+++ b/packages/sanity/src/_internal/cli/server/getViteConfig.ts
@@ -86,13 +86,7 @@ export async function getViteConfig(options: ViteOptions): Promise<InlineConfig>
   const defaultFaviconsPath = path.join(path.dirname(sanityPkgPath), 'static', 'favicons')
   const staticPath = `${basePath}static`
 
-  const conditions = [
-    'import',
-    'browser',
-    // the `es2015` condition is primarily rxjs
-    // https://github.com/ReactiveX/rxjs/blob/4a2d0d29a7b17607e74afcb6fb8037fe58ef9021/package.json#L22
-    'es2015',
-  ]
+  const conditions = ['import', 'browser']
 
   const viteConfig: InlineConfig = {
     // Define a custom cache directory so that sanity's vite cache