diff --git a/src/capwap/cwmsg_addelem_vendor_specific_payload.c b/src/capwap/cwmsg_addelem_vendor_specific_payload.c
new file mode 100644
index 00000000..e8918137
--- /dev/null
+++ b/src/capwap/cwmsg_addelem_vendor_specific_payload.c
@@ -0,0 +1,43 @@
+/*
+    This file is part of libcapwap.
+
+    libcapwap is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    libcapwap is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with Foobar.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "capwap.h"
+#include "cw_log.h"
+
+void cwmsg_addelem_vendor_specific_payload(struct cwmsg *msg,int vendor_id, int type, uint8_t * payload,int len)
+{
+	uint8_t * buffer = malloc (len + 6);
+	if (!buffer){
+		cw_log(LOG_ERR,"Add message elem vendor specific payload: out of memory");
+		return;
+	}
+
+	*((uint32_t*)buffer) = htonl(vendor_id);
+	*((uint16_t*)(buffer+4)) = htons(type);
+	memcpy(buffer+6,payload,len);
+
+
+	cwmsg_addelem(msg,CWMSGELEM_VENDOR_SPECIFIC_PAYLOAD,buffer,len+6);
+	free(buffer);
+}
+
+