diff --git a/ipmid.H b/ipmid.H
index 6b7d2c9..1cfe4c3 100755
--- a/ipmid.H
+++ b/ipmid.H
@@ -10,6 +10,10 @@
 
 // Plugin libraries need to _end_ with .so
 #define IPMI_PLUGIN_EXTN ".so"
-#define MAX_IPMI_BUFFER 255
+
+// The BT FIFO in the AST2400 can only handle 64 bytes.  
+// Can only allow 63 because the BT interface still 
+// needs 1 byte for the length field. 
+#define MAX_IPMI_BUFFER 63
 
 #endif