diff --git a/bigchaindb/core.py b/bigchaindb/core.py
index f76dd2d6..48838adb 100644
--- a/bigchaindb/core.py
+++ b/bigchaindb/core.py
@@ -1,6 +1,5 @@
 import rethinkdb as r
 import random
-import json
 import rapidjson