diff --git a/Ubiquitous/XiZi_AIoT/softkernel/include/buddy.h b/Ubiquitous/XiZi_AIoT/softkernel/include/buddy.h
index 4b73e7cd4..f29533e7c 100644
--- a/Ubiquitous/XiZi_AIoT/softkernel/include/buddy.h
+++ b/Ubiquitous/XiZi_AIoT/softkernel/include/buddy.h
@@ -36,7 +36,7 @@ Modification:
 #include <stdbool.h>
 #include <stdint.h>
 
-#define MAX_BUDDY_ORDER (14)
+#define MAX_BUDDY_ORDER (15)
 
 #define FREE_LIST_INDEX(order) \
     (1 << order)