diff --git a/kernel/trap.c b/kernel/trap.c
index 359fe39..3db4558 100644
--- a/kernel/trap.c
+++ b/kernel/trap.c
@@ -1,5 +1,4 @@
 #include "types.h"
-#include "param.h"
 #include "memlayout.h"
 #include "riscv.h"
 #include "spinlock.h"