diff --git a/kernel/include/sysnum.h b/kernel/include/sysnum.h
index bede71e28b62c68fcf0552bb68b09358e2939ee6..30165b0451b388169eecf7582c84bee7eef57827 100644
--- a/kernel/include/sysnum.h
+++ b/kernel/include/sysnum.h
@@ -16,16 +16,16 @@
 #define SYS_sbrk        12
 #define SYS_sleep       13
 #define SYS_uptime      14
-#define SYS_open        15
+#define SYS_open        56
 #define SYS_write       64
-#define SYS_remove      16
+#define SYS_remove      35
 #define SYS_trace       18
 #define SYS_sysinfo     19
-#define SYS_mkdir       33
+#define SYS_mkdir       34
 #define SYS_close       57
 #define SYS_test_proc   22
 #define SYS_dev         10
-#define SYS_readdir     27
+#define SYS_readdir     25
 #define SYS_getcwd      17
 #define SYS_rename      26
 #define SYS_clone       220