diff --git a/include/configs/colibri_t30.h b/include/configs/colibri_t30.h
index fbb235d82c..3431cde62f 100644
--- a/include/configs/colibri_t30.h
+++ b/include/configs/colibri_t30.h
@@ -48,6 +48,7 @@
 
 /* General networking support */
 #define CONFIG_IP_DEFRAG
+#define CONFIG_NET_MAXDEFRAG		(16384 + 4096 + 24)
 #define CONFIG_TFTP_BLOCKSIZE		16384
 #define CONFIG_TFTP_TSIZE