diff --git a/ccid_host/cuart_driver_tty.c b/ccid_host/cuart_driver_tty.c
index 5f635b5..42a8430 100644
--- a/ccid_host/cuart_driver_tty.c
+++ b/ccid_host/cuart_driver_tty.c
@@ -284,7 +284,9 @@
 	case CUART_CTL_WTIME:
 		/* no driver-specific handling of this */
 		break;
-	case CUART_CTL_POWER:
+	case CUART_CTL_POWER_5V0:
+	case CUART_CTL_POWER_3V0:
+	case CUART_CTL_POWER_1V8:
 	case CUART_CTL_CLOCK:
 	default:
 		return -EINVAL;
diff --git a/ccid_host/cuart_fsm_test.c b/ccid_host/cuart_fsm_test.c
index 5b03bfe..38cad14 100644
--- a/ccid_host/cuart_fsm_test.c
+++ b/ccid_host/cuart_fsm_test.c
@@ -79,7 +79,7 @@
 
 	/* activate reset, then power up */
 	card_uart_ctrl(&g_cuart, CUART_CTL_RST, true);
-	card_uart_ctrl(&g_cuart, CUART_CTL_POWER, true);
+	card_uart_ctrl(&g_cuart, CUART_CTL_POWER_1V8, true);
 	osmo_fsm_inst_dispatch(fi, ISO7816_E_POWER_UP_IND, NULL);
 
 	/* activate clock */