diff --git a/client/msw-handlers.ts b/client/msw-handlers.ts
index f380fa0..be337b7 100644
--- a/client/msw-handlers.ts
+++ b/client/msw-handlers.ts
@@ -1025,13 +1025,6 @@ export interface MSWHandlers {
   }) => Promisable<StatusCode>;
 }
 
-function validateBody<S extends ZodSchema>(schema: S, body: unknown) {
-  const result = schema.transform(snakeify).safeParse(body);
-  if (result.success) {
-    return { body: result.data as Json<z.infer<S>> };
-  }
-  return { bodyErr: json(result.error.issues, { status: 400 }) };
-}
 function validateParams<S extends ZodSchema>(
   schema: S,
   req: Request,
@@ -1083,10 +1076,13 @@ const handler =
 
     const { path, query } = params;
 
-    const { body, bodyErr } = bodySchema
-      ? validateBody(bodySchema, await req.json())
-      : { body: undefined, bodyErr: undefined };
-    if (bodyErr) return json(bodyErr, { status: 400 });
+    let body = undefined;
+    if (bodySchema) {
+      const rawBody = await req.json();
+      const result = bodySchema.transform(snakeify).safeParse(body);
+      if (!result.success) return json(result.error.issues, { status: 400 });
+      body = result.data;
+    }
 
     try {
       // TypeScript can't narrow the handler down because there's not an explicit relationship between the schema
diff --git a/generator/client/msw-handlers.ts b/generator/client/msw-handlers.ts
index db1db45..4822724 100644
--- a/generator/client/msw-handlers.ts
+++ b/generator/client/msw-handlers.ts
@@ -119,13 +119,6 @@ export function generateMSWHandlers(spec: OpenAPIV3.Document) {
   w("}");
 
   w(`
-    function validateBody<S extends ZodSchema>(schema: S, body: unknown) {
-      const result = schema.transform(snakeify).safeParse(body);
-      if (result.success) {
-        return { body: result.data as Json<z.infer<S>> }
-      }
-      return { bodyErr: json(result.error.issues, { status: 400 }) }
-    }
     function validateParams<S extends ZodSchema>(schema: S, req: Request, pathParams: PathParams) {
       const rawParams = new URLSearchParams(new URL(req.url).search)
       const params: [string, unknown][] = []
@@ -168,10 +161,13 @@ export function generateMSWHandlers(spec: OpenAPIV3.Document) {
 
         const { path, query } = params
 
-        const { body, bodyErr } = bodySchema
-          ? validateBody(bodySchema, await req.json())
-          : { body: undefined, bodyErr: undefined };
-        if (bodyErr) return json(bodyErr, { status: 400 });
+        let body = undefined
+        if (bodySchema) {
+          const rawBody = await req.json()
+          const result = bodySchema.transform(snakeify).safeParse(body);
+          if (!result.success) return json(result.error.issues, { status: 400 })
+          body = result.data
+        }
 
         try {
           // TypeScript can't narrow the handler down because there's not an explicit relationship between the schema