diff --git a/ZLToolKit b/ZLToolKit
index 7dbbfc28..8225192d 160000
--- a/ZLToolKit
+++ b/ZLToolKit
@@ -1 +1 @@
-Subproject commit 7dbbfc28b5dce9da4a0b27e63fdd04fbf0e6a691
+Subproject commit 8225192d05f058b02bcbd3847f392e0be0b59079
diff --git a/src/Rtsp/RtspPlayer.cpp b/src/Rtsp/RtspPlayer.cpp
index d8b5cff5..8f1ac3e7 100644
--- a/src/Rtsp/RtspPlayer.cpp
+++ b/src/Rtsp/RtspPlayer.cpp
@@ -228,9 +228,9 @@ bool RtspPlayer::handleAuthenticationFailure(const string &paramsStr) {
         return false;
     }
 
-    char realm[paramsStr.size()];
-    char nonce[paramsStr.size()];
-    char stale[paramsStr.size()];
+    char realm[1024];
+    char nonce[1024];
+    char stale[1024];
 
     if (sscanf(paramsStr.data(), "Digest realm=\"%[^\"]\", nonce=\"%[^\"]\", stale=%[a-zA-Z]", realm, nonce, stale) == 3) {
         (*this)[kRtspRealm] = realm;