diff --git a/external/3rd/library/soePlatform/ChatAPI/utils/UdpLibrary/UdpMisc.cpp b/external/3rd/library/soePlatform/ChatAPI/utils/UdpLibrary/UdpMisc.cpp
index 08851ece..7628bdbf 100644
--- a/external/3rd/library/soePlatform/ChatAPI/utils/UdpLibrary/UdpMisc.cpp
+++ b/external/3rd/library/soePlatform/ChatAPI/utils/UdpLibrary/UdpMisc.cpp
@@ -2,6 +2,7 @@
 // Author: Jeff Petersen
 
 #include <string.h>
+#include <limits.h>
 
 #include "UdpMisc.h"
 #include "UdpLogicalPacket.h"
diff --git a/external/3rd/library/udplibrary/UdpLibrary.cpp b/external/3rd/library/udplibrary/UdpLibrary.cpp
index c4b32c3b..90ddb01f 100644
--- a/external/3rd/library/udplibrary/UdpLibrary.cpp
+++ b/external/3rd/library/udplibrary/UdpLibrary.cpp
@@ -3,6 +3,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
+#include <limits.h>
 
 #include "UdpLibrary.hpp"