diff --git a/.changeset/heavy-sheep-yawn.md b/.changeset/heavy-sheep-yawn.md
new file mode 100644
index 00000000000..34e2c0f9640
--- /dev/null
+++ b/.changeset/heavy-sheep-yawn.md
@@ -0,0 +1,5 @@
+---
+'@whatwg-node/server': patch
+---
+
+Set an empty object if there is no server context sent by the environment
diff --git a/packages/server/src/index.ts b/packages/server/src/index.ts
index 0d3264c0cb5..8f219b7117b 100644
--- a/packages/server/src/index.ts
+++ b/packages/server/src/index.ts
@@ -140,7 +140,7 @@ function createServerAdapter<
     event.respondWith(response$);
   }
 
-  function genericRequestHandler(input: any, ctx: any, ...rest: any[]) {
+  function genericRequestHandler(input: any, ctx: any = {}, ...rest: any[]) {
     if ('process' in globalThis && process.versions?.['bun'] != null) {
       // This is required for bun
       input.text();