diff --git a/src/core/thread/thread_tlvs.hpp b/src/core/thread/thread_tlvs.hpp
index 602930d27..24df4e586 100644
--- a/src/core/thread/thread_tlvs.hpp
+++ b/src/core/thread/thread_tlvs.hpp
@@ -47,7 +47,7 @@ namespace Thread {
 
 enum
 {
-    kCoapUdpPort = 19789,
+    kCoapUdpPort = 61631,
 };
 
 /**