diff --git a/mbed_app.json b/mbed_app.json
index adc3b58..27572e7 100644
--- a/mbed_app.json
+++ b/mbed_app.json
@@ -61,6 +61,7 @@
             "main_stack_size":      1024,
             "target.lpticker_lptim": 0,
             "target.clock_source": "USE_PLL_HSI",
+            "sx1272-lora-driver.radio-variant": "SX1272MB2XAS",
             "lora-radio":          "SX1272",
             "lora-spi-mosi":       "D11",
             "lora-spi-miso":       "D12",
@@ -77,7 +78,7 @@
             "lora-rf-switch-ctl2": "NC",
             "lora-txctl":          "NC",
             "lora-rxctl":          "NC",
-            "lora-ant-switch":     "A4",
+            "lora-ant-switch":     "NC",
             "lora-pwr-amp-ctl":    "NC",
             "lora-tcxo":           "NC",
             "battery-enabled":     true,