diff --git a/src/core/drive/form_submission.ts b/src/core/drive/form_submission.ts
index 460c9ba0e..3c89a2a05 100644
--- a/src/core/drive/form_submission.ts
+++ b/src/core/drive/form_submission.ts
@@ -2,7 +2,6 @@ import { FetchRequest, FetchMethod, fetchMethodFromString, FetchRequestHeaders }
 import { FetchResponse } from "../../http/fetch_response"
 import { expandURL } from "../url"
 import { dispatch } from "../../util"
-import { StreamMessage } from "../streams/stream_message"
 
 export interface FormSubmissionDelegate {
   formSubmissionStarted(formSubmission: FormSubmission): void
@@ -153,7 +152,6 @@ export class FormSubmission {
       if (token) {
         headers["X-CSRF-Token"] = token
       }
-      headers["Accept"] = [StreamMessage.contentType, headers["Accept"]].join(", ")
     }
   }
 
diff --git a/src/http/fetch_request.ts b/src/http/fetch_request.ts
index b10f5c843..3e614fab3 100644
--- a/src/http/fetch_request.ts
+++ b/src/http/fetch_request.ts
@@ -1,6 +1,7 @@
 import { FetchResponse } from "./fetch_response"
 import { FrameElement } from "../elements/frame_element"
 import { dispatch } from "../util"
+import { StreamMessage } from "../core/streams/stream_message"
 
 export interface FetchRequestDelegate {
   referrer?: URL
@@ -137,7 +138,7 @@ export class FetchRequest {
 
   get defaultHeaders() {
     return {
-      Accept: "text/html, application/xhtml+xml",
+      Accept: [StreamMessage.contentType, "text/html", "application/xhtml+xml"].join(", "),
     }
   }
 
diff --git a/src/tests/functional/form_submission_tests.ts b/src/tests/functional/form_submission_tests.ts
index e407d9055..50f02c39b 100644
--- a/src/tests/functional/form_submission_tests.ts
+++ b/src/tests/functional/form_submission_tests.ts
@@ -157,7 +157,7 @@ export class FormSubmissionTests extends TurboDriveTestCase {
 
     const { fetchOptions } = await this.nextEventNamed("turbo:before-fetch-request")
 
-    this.assert.notOk(fetchOptions.headers["Accept"].includes("text/vnd.turbo-stream.html"))
+    this.assert.ok(fetchOptions.headers["Accept"].includes("text/vnd.turbo-stream.html"))
 
     await this.nextEventNamed("turbo:before-fetch-response")
 
@@ -486,7 +486,7 @@ export class FormSubmissionTests extends TurboDriveTestCase {
 
     const { fetchOptions } = await this.nextEventNamed("turbo:before-fetch-request")
 
-    this.assert.notOk(fetchOptions.headers["Accept"].includes("text/vnd.turbo-stream.html"))
+    this.assert.ok(fetchOptions.headers["Accept"].includes("text/vnd.turbo-stream.html"))
     this.assert.equal("frame", fetchOptions.headers["Turbo-Frame"])
 
     await this.nextEventNamed("turbo:before-fetch-response")