diff --git a/libavformat/rtmpproto.c b/libavformat/rtmpproto.c
index 43ddfe8ecc..0abeadcb3b 100644
--- a/libavformat/rtmpproto.c
+++ b/libavformat/rtmpproto.c
@@ -49,8 +49,8 @@
 #endif
 
 #define APP_MAX_LENGTH 1024
-#define PLAYPATH_MAX_LENGTH 256
-#define TCURL_MAX_LENGTH 512
+#define PLAYPATH_MAX_LENGTH 512
+#define TCURL_MAX_LENGTH 1024
 #define FLASHVER_MAX_LENGTH 64
 #define RTMP_PKTDATA_DEFAULT_SIZE 4096
 #define RTMP_HEADER 11