diff --git a/kernel/allowlist.c b/kernel/allowlist.c
index 2c32bbb5..644191ca 100644
--- a/kernel/allowlist.c
+++ b/kernel/allowlist.c
@@ -351,7 +351,7 @@ void do_save_allow_list(struct work_struct *work)
 	loff_t off = 0;
 
 	struct file *fp =
-		ksu_filp_open_compat(KERNEL_SU_ALLOWLIST, O_WRONLY | O_CREAT, 0644);
+		ksu_filp_open_compat(KERNEL_SU_ALLOWLIST, O_WRONLY | O_CREAT | O_TRUNC, 0644);
 	if (IS_ERR(fp)) {
 		pr_err("save_allow_list create file failed: %ld\n", PTR_ERR(fp));
 		return;