diff --git a/packages/core/src/api/sync/index.ts b/packages/core/src/api/sync/index.ts
index 01ed86ce8..16da52087 100644
--- a/packages/core/src/api/sync/index.ts
+++ b/packages/core/src/api/sync/index.ts
@@ -237,8 +237,6 @@ class Sync {
   }
 
   async send(deviceId: string, isForceSync?: boolean) {
-    // TODO: remove this.
-    if (process.env.NODE_ENV !== "test") return false;
     await this.uploadAttachments();
 
     let done = 0;