diff --git a/MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/NucleusLib/pnIniExe/Private/pnIniSrv.cpp b/MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/NucleusLib/pnIniExe/Private/pnIniSrv.cpp
index 0ef627f3..77bd68ec 100644
--- a/MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/NucleusLib/pnIniExe/Private/pnIniSrv.cpp
+++ b/MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/NucleusLib/pnIniExe/Private/pnIniSrv.cpp
@@ -56,7 +56,7 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
 *
 ***/
 
-const unsigned			CLASS_C_SUBNET_MASK		= 0xFFFFFF00;
+const unsigned			CLASS_C_SUBNET_MASK		= 0xFFFF0000;
 const NetAddressNode	LOOPBACK_ADDRESS_NODE	= 0x7F000001;