diff --git a/reactos/drivers/network/tcpip/include/ip.h b/reactos/drivers/network/tcpip/include/ip.h
index 47f9771f0d9..52ed331da19 100644
--- a/reactos/drivers/network/tcpip/include/ip.h
+++ b/reactos/drivers/network/tcpip/include/ip.h
@@ -187,8 +187,8 @@ typedef VOID (*IP_PROTOCOL_HANDLER)(
 
 /* Loopback adapter address information (network byte order) */
 #define LOOPBACK_ADDRESS_IPv4   ((IPv4_RAW_ADDRESS)DH2N(0x7F000001))
-#define LOOPBACK_BCASTADDR_IPv4 ((IPv4_RAW_ADDRESS)DH2N(0x7F0000FF))
-#define LOOPBACK_ADDRMASK_IPv4  ((IPv4_RAW_ADDRESS)DH2N(0xFFFFFF00))
+#define LOOPBACK_BCASTADDR_IPv4 ((IPv4_RAW_ADDRESS)DH2N(0x7FFFFFFF))
+#define LOOPBACK_ADDRMASK_IPv4  ((IPv4_RAW_ADDRESS)DH2N(0xFF000000))
 
 /* Protocol definitions */
 #ifndef IPPROTO_RAW