diff --git a/include/netutils/httpd.h b/include/netutils/httpd.h
index d14b6bf4d..5da5ff762 100644
--- a/include/netutils/httpd.h
+++ b/include/netutils/httpd.h
@@ -80,7 +80,7 @@
  * buffer be sufficiently large to contain the entire GET request.
  */
 
-#define HTTPD_IOBUFFER_SIZE (3*UIP_TCP_MSS)
+#define HTTPD_IOBUFFER_SIZE (3*TCP_MSS)
 
 /* This is the maximum size of a file path */
 
diff --git a/netutils/tftpc/tftpc_internal.h b/netutils/tftpc/tftpc_internal.h
index 1a9601c63..436090193 100644
--- a/netutils/tftpc/tftpc_internal.h
+++ b/netutils/tftpc/tftpc_internal.h
@@ -91,8 +91,8 @@
 #define TFTP_DATAHEADERSIZE 4
 #define TFTP_MAXPACKETSIZE  (TFTP_DATAHEADERSIZE+512)
 
-#if UIP_UDP_MSS < TFTP_MAXPACKETSIZE
-#  define TFTP_PACKETSIZE   UIP_UDP_MSS
+#if UDP_MSS < TFTP_MAXPACKETSIZE
+#  define TFTP_PACKETSIZE   UDP_MSS
 #  ifdef CONFIG_CPP_HAVE_WARNING
 #    warning "uIP MSS is too small for TFTP"
 #  endif