diff --git a/server/textserver/textmgr.cc b/server/textserver/textmgr.cc
index de77cb0..c8180b2 100644
--- a/server/textserver/textmgr.cc
+++ b/server/textserver/textmgr.cc
@@ -91,7 +91,8 @@ std::string TextMgr::Sign(const std::string& name)
     int rnd = rand();
     std::string sign = a8::openssl::md5(name +
                                         a8::XValue(App::Instance()->nowtime).GetString() +
-                                        a8::XValue(rnd).GetString());
+                                        a8::XValue(rnd).GetString() +
+                                        "sllpqzirwnm5q0kj8qvoxlqhxc3nhn7a");
     sign = a8::Format("%s_%s_%s",
                       {
                           a8::XValue(App::Instance()->nowtime).GetString(),