diff --git a/halt.c b/halt.c
index deb0fde..aef6414 100644
--- a/halt.c
+++ b/halt.c
@@ -33,8 +33,8 @@ main(int argc, char *argv[])
 	if (pflag)
 		cmd = LINUX_REBOOT_CMD_POWER_OFF;
 
-	if (syscall(__NR_reboot, 0xfee1dead, 672274793,
-		    cmd, NULL) < 0)
+	if (syscall(__NR_reboot, LINUX_REBOOT_MAGIC1,
+		    LINUX_REBOOT_MAGIC2, cmd, NULL) < 0)
 		eprintf("reboot:");
 	return 0;
 }
diff --git a/reboot.c b/reboot.c
index 080f1ed..8a134be 100644
--- a/reboot.c
+++ b/reboot.c
@@ -24,7 +24,8 @@ main(int argc, char *argv[])
 
 	sync();
 
-	if (syscall(__NR_reboot, 0xfee1dead, 672274793,
+	if (syscall(__NR_reboot, LINUX_REBOOT_MAGIC1,
+		    LINUX_REBOOT_MAGIC2,
 		    LINUX_REBOOT_CMD_RESTART, NULL) < 0)
 		eprintf("reboot:");
 	return 0;