diff --git a/src/replication.c b/src/replication.c
index 40709e9b..fed2eecd 100644
--- a/src/replication.c
+++ b/src/replication.c
@@ -1035,7 +1035,7 @@ void readSyncBulkPayload(aeEventLoop *el, int fd, void *privdata, int mask) {
                 "MASTER <-> SLAVE sync: receiving streamed RDB from master");
         } else {
             usemark = 0;
-            server.repl_transfer_size = IF_WIN32(strtoll,strtol)(buf+1,NULL,10);
+            server.repl_transfer_size = IF_WIN32(strtoll,strtol)(buf+1,NULL,10);  /* BUGBUG: verify for 32bit support */
             redisLog(REDIS_NOTICE,
                 "MASTER <-> SLAVE sync: receiving %lld bytes from master",
                 (PORT_LONGLONG) server.repl_transfer_size);