diff --git a/trunk/src/kernel/srs_kernel_consts.hpp b/trunk/src/kernel/srs_kernel_consts.hpp
index dc6449045..addda5696 100644
--- a/trunk/src/kernel/srs_kernel_consts.hpp
+++ b/trunk/src/kernel/srs_kernel_consts.hpp
@@ -178,6 +178,8 @@
 #define SRS_CONSTS_LOG_EXEC "EXE"
 // The rtc.
 #define SRS_CONSTS_LOG_RTC "RTC"
+// The gb28181 stream log id.
+#define SRS_CONSTS_LOG_GB28181_CASTER "GBS"
 
 ///////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////