diff --git a/src/capwap/cwmsg_addelem_session_id.c b/src/capwap/cwmsg_addelem_session_id.c
new file mode 100644
index 00000000..235e9235
--- /dev/null
+++ b/src/capwap/cwmsg_addelem_session_id.c
@@ -0,0 +1,8 @@
+#include "capwap.h"
+#include "bstr.h"
+#include "cwmsg.h"
+
+void cwmsg_addelem_cwmsg_session_id(struct cwmsg *msg, bstr_t session_id)
+{
+	cwmsg_addelem(msg,CWMSGELEM_SESSION_ID,bstr_data(session_id),bstr_len(session_id));
+}