diff --git a/include/configs/tbs2910.h b/include/configs/tbs2910.h
index 601347d9f801db19d54a78fa6fcc867a432d6af1..26832140c0a5086a7b3e1bedaf79265623ffde4d 100644
--- a/include/configs/tbs2910.h
+++ b/include/configs/tbs2910.h
@@ -39,8 +39,6 @@
 #define CONFIG_CMDLINE_EDITING
 #define CONFIG_SYS_MAXARGS		16
 #define CONFIG_SYS_CBSIZE		1024
-#define CONFIG_SYS_PBSIZE \
-	(CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
 #define CONFIG_SYS_HZ			1000
 
 /* Physical Memory Map */