diff --git a/client/client.cpp b/client/client.cpp
index 2d7f151..cc73231 100644
--- a/client/client.cpp
+++ b/client/client.cpp
@@ -146,6 +146,10 @@ bool CClient::down_one_file(const std::string& id, const std::string& file)
         return false;
     }
     down_->trans_state_ = TRANS_REDAY;
+    while (down_->trans_state_ != TRANS_DONE) {
+        std::this_thread::sleep_for(std::chrono::milliseconds(10));
+    }
+
     return true;
 }