diff --git a/data/buildlogs.py b/data/buildlogs.py
index 90a5fd2e7..3f3336264 100644
--- a/data/buildlogs.py
+++ b/data/buildlogs.py
@@ -34,8 +34,11 @@ class RedisBuildLogs(object):
     Appends the serialized form of log_obj to the end of the log entry list
     and returns the new length of the list.
     """
-    self._redis.expire(self._logs_key(build_id), SEVEN_DAYS)
-    return self._redis.rpush(self._logs_key(build_id), json.dumps(log_obj))
+    pipeline = self._redis.pipeline(transaction=False)
+    pipeline.expire(self._logs_key(build_id), SEVEN_DAYS)
+    pipeline.rpush(self._logs_key(build_id), json.dumps(log_obj))
+    result = pipeline.execute()
+    return result[1]
 
   def append_log_message(self, build_id, log_message, log_type=None, log_data=None):
     """