diff --git a/lib/config.js b/lib/config.js
index 61d4a656ec06a..5aa0b7d6046d6 100755
--- a/lib/config.js
+++ b/lib/config.js
@@ -64,6 +64,7 @@ Config.prototype.buildArgs = function () {
   const chrome_version_parts = this.chromeVersion.split('.')
 
   let args = {
+    fieldtrial_testing_like_official_build: true,
     safe_browsing_mode: 1,
     root_extra_deps: ["//brave"],
     // TODO: Re-enable when chromium_src overrides work for files in relative
diff --git a/package.json b/package.json
index a9694ff8ad795..fcf5fdcba7229 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
       },
       "brave-core": {
         "dir": "src/brave",
-        "branch": "master",
+        "branch": "disable_field_trials",
         "repository": {
           "url": "https://github.com/brave/brave-core.git"
         }