diff --git a/.changeset/tricky-bees-yell.md b/.changeset/tricky-bees-yell.md
new file mode 100644
index 000000000000..09e5d1843f81
--- /dev/null
+++ b/.changeset/tricky-bees-yell.md
@@ -0,0 +1,7 @@
+---
+'@sveltejs/adapter-netlify': patch
+'@sveltejs/adapter-node': patch
+'@sveltejs/adapter-vercel': patch
+---
+
+Rename \_\_fetch_polyfill to installFetch
diff --git a/packages/adapter-netlify/src/shims.js b/packages/adapter-netlify/src/shims.js
index 0f5610df98c1..8d2fe00acd85 100644
--- a/packages/adapter-netlify/src/shims.js
+++ b/packages/adapter-netlify/src/shims.js
@@ -1,2 +1,2 @@
-import { __fetch_polyfill } from '@sveltejs/kit/install-fetch';
-__fetch_polyfill();
+import { installFetch } from '@sveltejs/kit/install-fetch';
+installFetch();
diff --git a/packages/adapter-node/src/shims.js b/packages/adapter-node/src/shims.js
index 0f5610df98c1..8d2fe00acd85 100644
--- a/packages/adapter-node/src/shims.js
+++ b/packages/adapter-node/src/shims.js
@@ -1,2 +1,2 @@
-import { __fetch_polyfill } from '@sveltejs/kit/install-fetch';
-__fetch_polyfill();
+import { installFetch } from '@sveltejs/kit/install-fetch';
+installFetch();
diff --git a/packages/adapter-vercel/files/shims.js b/packages/adapter-vercel/files/shims.js
index 0f5610df98c1..8d2fe00acd85 100644
--- a/packages/adapter-vercel/files/shims.js
+++ b/packages/adapter-vercel/files/shims.js
@@ -1,2 +1,2 @@
-import { __fetch_polyfill } from '@sveltejs/kit/install-fetch';
-__fetch_polyfill();
+import { installFetch } from '@sveltejs/kit/install-fetch';
+installFetch();