diff --git a/drivers/sysreset/poweroff_gpio.c b/drivers/sysreset/poweroff_gpio.c
index a5c24fd..ad04e4b 100644
--- a/drivers/sysreset/poweroff_gpio.c
+++ b/drivers/sysreset/poweroff_gpio.c
@@ -33,7 +33,7 @@
 	int r;
 
 	if (type != SYSRESET_POWER_OFF)
-		return -ENOSYS;
+		return -EPROTONOSUPPORT;
 
 	debug("GPIO poweroff\n");