diff --git a/kernel/extended/liteipc/hm_liteipc.c b/kernel/extended/liteipc/hm_liteipc.c
index b836a6b15daf85350c92725cf6185111e6c7fbb1..14ead789e34ae803edeb7cb3e794046791c203d4 100644
--- a/kernel/extended/liteipc/hm_liteipc.c
+++ b/kernel/extended/liteipc/hm_liteipc.c
@@ -51,7 +51,8 @@
 
 #define USE_TASKID_AS_HANDLE YES
 #define USE_MMAP YES
-#define IPC_MSG_DATA_SZ_MAX 1024
+#define IPC_IO_DATA_MAX 8192UL
+#define IPC_MSG_DATA_SZ_MAX (IPC_IO_DATA_MAX * sizeof(SpecialObj) / (sizeof(SpecialObj) + sizeof(size_t)))
 #define IPC_MSG_OBJECT_NUM_MAX (IPC_MSG_DATA_SZ_MAX / sizeof(SpecialObj))
 
 #define LITE_IPC_POOL_NAME "liteipc"