diff --git a/shell/browser/api/electron_api_web_request.cc b/shell/browser/api/electron_api_web_request.cc
index 2ffc346bbf..17e99aecc5 100644
--- a/shell/browser/api/electron_api_web_request.cc
+++ b/shell/browser/api/electron_api_web_request.cc
@@ -19,7 +19,6 @@
 #include "gin/converter.h"
 #include "gin/dictionary.h"
 #include "gin/object_template_builder.h"
-#include "net/http/http_content_disposition.h"
 #include "shell/browser/api/electron_api_session.h"
 #include "shell/browser/api/electron_api_web_contents.h"
 #include "shell/browser/api/electron_api_web_frame_main.h"
@@ -98,22 +97,6 @@ v8::Local<v8::Value> HttpResponseHeadersToV8(
     std::string key;
     std::string value;
     while (headers->EnumerateHeaderLines(&iter, &key, &value)) {
-      // Note that Web servers not developed with nodejs allow non-utf8
-      // characters in content-disposition's filename field. Use Chromium's
-      // HttpContentDisposition class to decode the correct encoding instead of
-      // arbitrarily converting it to UTF8. It should also be noted that if the
-      // encoding is not specified, HttpContentDisposition will transcode
-      // according to the system's encoding.
-      if (base::EqualsCaseInsensitiveASCII("Content-Disposition", key) &&
-          !value.empty()) {
-        net::HttpContentDisposition header(value, std::string());
-        std::string decodedFilename =
-            header.is_attachment() ? " attachment" : " inline";
-        // The filename must be encased in double quotes for serialization
-        // to happen correctly.
-        std::string filename = "\"" + header.filename() + "\"";
-        value = decodedFilename + "; filename=" + filename;
-      }
       response_headers.EnsureList(key)->Append(value);
     }
   }
diff --git a/spec/api-web-request-spec.ts b/spec/api-web-request-spec.ts
index 3afaba1cd9..95737fc779 100644
--- a/spec/api-web-request-spec.ts
+++ b/spec/api-web-request-spec.ts
@@ -474,7 +474,7 @@ describe('webRequest module', () => {
 
     it('does not change content-disposition header by default', async () => {
       ses.webRequest.onHeadersReceived((details, callback) => {
-        expect(details.responseHeaders!['content-disposition']).to.deep.equal([' attachment; filename="aa中aa.txt"']);
+        expect(details.responseHeaders!['content-disposition']).to.deep.equal(['attachment; filename=aa中aa.txt']);
         callback({});
       });
       const { data, headers } = await ajax(defaultURL + 'contentDisposition');