diff --git a/src/handlers/delete.js b/src/handlers/delete.js
index ba77e3a..e6b0b77 100644
--- a/src/handlers/delete.js
+++ b/src/handlers/delete.js
@@ -11,10 +11,10 @@
  */
 import { deleteSource } from '../routes/source.js';
 
-export default async function deleteHandler({ env, daCtx }) {
+export default async function deleteHandler({ req, env, daCtx }) {
   const { path } = daCtx;
 
-  if (path.startsWith('/source')) return deleteSource({ env, daCtx });
+  if (path.startsWith('/source')) return deleteSource({ req, env, daCtx });
 
   return undefined;
 }
diff --git a/src/index.js b/src/index.js
index 0a4b225..6dc1671 100644
--- a/src/index.js
+++ b/src/index.js
@@ -42,7 +42,7 @@ export default {
         respObj = await postHandler({ req, env, daCtx });
         break;
       case 'DELETE':
-        respObj = await deleteHandler({ env, daCtx });
+        respObj = await deleteHandler({ req, env, daCtx });
         break;
       default:
         respObj = unkownHandler();
diff --git a/src/routes/source.js b/src/routes/source.js
index 6174ea3..b974a28 100644
--- a/src/routes/source.js
+++ b/src/routes/source.js
@@ -16,13 +16,8 @@ import deleteObject from '../storage/object/delete.js';
 import putHelper from '../helpers/source.js';
 import { postObjectVersion } from '../storage/version/put.js';
 
-export async function deleteSource({ env, daCtx }) {
-  await postObjectVersion(env, daCtx);
-  return deleteObject(env, daCtx);
-}
-
-async function invalidateCollab(url, env) {
-  const invPath = `/api/v1/syncadmin?doc=${url}`;
+async function invalidateCollab(api, url, env) {
+  const invPath = `/api/v1/${api}?doc=${url}`;
   if (env.dacollab) {
     // service binding is configured, hostname is not relevant
     console.log('Using service binding');
@@ -39,6 +34,19 @@ async function invalidateCollab(url, env) {
   }
 }
 
+export async function deleteSource({ req, env, daCtx }) {
+  await postObjectVersion(env, daCtx);
+  const resp = await deleteObject(env, daCtx);
+
+  if (resp.status === 204) {
+    const initiator = req.headers.get('x-da-initiator');
+    if (initiator !== 'collab') {
+      await invalidateCollab('deleteadmin', req.url, env);
+    }
+  }
+  return resp;
+}
+
 export async function postSource({ req, env, daCtx }) {
   const obj = await putHelper(req, env, daCtx);
   const resp = await putObject(env, daCtx, obj);
@@ -46,7 +54,7 @@ export async function postSource({ req, env, daCtx }) {
   if (resp.status === 201 || resp.status === 200) {
     const initiator = req.headers.get('x-da-initiator');
     if (initiator !== 'collab') {
-      await invalidateCollab(req.url, env);
+      await invalidateCollab('syncadmin', req.url, env);
     }
   }
   return resp;
diff --git a/src/storage/object/delete.js b/src/storage/object/delete.js
index cbcfcae..bb0944f 100644
--- a/src/storage/object/delete.js
+++ b/src/storage/object/delete.js
@@ -71,5 +71,5 @@ export default async function deleteObjects(env, daCtx) {
     }
   } while (ContinuationToken);
 
-  return { body: '', status: 204 };
+  return { body: null, status: 204 };
 }
diff --git a/test/routes/source.test.js b/test/routes/source.test.js
index bb80e22..950a814 100644
--- a/test/routes/source.test.js
+++ b/test/routes/source.test.js
@@ -186,7 +186,15 @@ describe('Source Route', () => {
   });
 
   it('Test deleteSource', async () => {
-    const env = {};
+    const req = {
+      headers: new Map(),
+      url: 'http://somehost.com/somedoc.html'
+    };
+
+    const daCalled = []
+    const dacollab = { fetch: (u) => daCalled.push(u) };
+
+    const env = { dacollab };
     const daCtx = {};
 
     const called = [];
@@ -204,8 +212,10 @@ describe('Source Route', () => {
         }
       }
     );
-    const resp = await deleteSource({env, daCtx});
+    const resp = await deleteSource({req, env, daCtx});
     assert.equal(204, resp.status);
     assert.deepStrictEqual(called, ['deleteObject']);
+    assert.deepStrictEqual(daCalled,
+      ['https://localhost/api/v1/deleteadmin?doc=http://somehost.com/somedoc.html']);
   });
 });
\ No newline at end of file