diff --git a/reactos/drivers/bus/acpi/ospm/fdo.c b/reactos/drivers/bus/acpi/ospm/fdo.c
index d752658a60f..177061f5bf2 100644
--- a/reactos/drivers/bus/acpi/ospm/fdo.c
+++ b/reactos/drivers/bus/acpi/ospm/fdo.c
@@ -694,6 +694,7 @@ FdoSetPower(
       break;
     default:
       Status = STATUS_UNSUCCESSFUL;
+      return Status;
     }
     if (!DeviceExtension->SystemStates[AcpiState]) {
       DPRINT("System sleep state S%d is not supported by hardware\n", AcpiState);