diff --git a/components/brave_sync/BUILD.gn b/components/brave_sync/BUILD.gn
index 09a7c3193ac7..8f2708c6a118 100644
--- a/components/brave_sync/BUILD.gn
+++ b/components/brave_sync/BUILD.gn
@@ -15,6 +15,8 @@ declare_args() {
 
 if (is_official_build) {
   assert(brave_sync_endpoint != "")
+} else if (brave_sync_endpoint == "") {
+  brave_sync_endpoint = "https://sync-v2.brave.software/v2"
 }
 
 buildflag_header("buildflags") {