diff --git a/src/nimble/NimbleBluetooth.cpp b/src/nimble/NimbleBluetooth.cpp
index 69da25884..3b98eca3d 100644
--- a/src/nimble/NimbleBluetooth.cpp
+++ b/src/nimble/NimbleBluetooth.cpp
@@ -651,8 +651,8 @@ class NimbleBluetoothServerCallback : public NimBLEServerCallbacks
     {
         LOG_INFO("BLE incoming connection %s", connInfo.getAddress().toString().c_str());
 
-#if defined(CONFIG_IDF_TARGET_ESP32S3) || defined(CONFIG_IDF_TARGET_ESP32C6)
         const uint16_t connHandle = connInfo.getConnHandle();
+#if NIMBLE_ENABLE_2M_PHY && (defined(CONFIG_IDF_TARGET_ESP32S3) || defined(CONFIG_IDF_TARGET_ESP32C6))
         int phyResult =
             ble_gap_set_prefered_le_phy(connHandle, BLE_GAP_LE_PHY_2M_MASK, BLE_GAP_LE_PHY_2M_MASK, BLE_GAP_LE_PHY_CODED_ANY);
         if (phyResult == 0) {
@@ -660,6 +660,7 @@ class NimbleBluetoothServerCallback : public NimBLEServerCallbacks
         } else {
             LOG_WARN("Failed to prefer 2M PHY for conn %u, rc=%d", connHandle, phyResult);
         }
+#endif
 
         int dataLenResult = ble_gap_set_data_len(connHandle, kPreferredBleTxOctets, kPreferredBleTxTimeUs);
         if (dataLenResult == 0) {
@@ -670,9 +671,10 @@ class NimbleBluetoothServerCallback : public NimBLEServerCallbacks
 
         LOG_INFO("BLE conn %u initial MTU %u (target %u)", connHandle, connInfo.getMTU(), kPreferredBleMtu);
         pServer->updateConnParams(connHandle, 6, 12, 0, 200);
-#endif
     }
+#endif
 
+#ifdef NIMBLE_TWO
     virtual void onDisconnect(NimBLEServer *pServer, NimBLEConnInfo &connInfo, int reason)
     {
         LOG_INFO("BLE disconnect reason: %d", reason);
@@ -818,7 +820,7 @@ void NimbleBluetooth::setup()
     NimBLEDevice::init(getDeviceName());
     NimBLEDevice::setPower(ESP_PWR_LVL_P9);
 
-#if defined(CONFIG_IDF_TARGET_ESP32S3) || defined(CONFIG_IDF_TARGET_ESP32C6)
+#if NIMBLE_ENABLE_2M_PHY && (defined(CONFIG_IDF_TARGET_ESP32S3) || defined(CONFIG_IDF_TARGET_ESP32C6))
     int mtuResult = NimBLEDevice::setMTU(kPreferredBleMtu);
     if (mtuResult == 0) {
         LOG_INFO("BLE MTU request set to %u", kPreferredBleMtu);
diff --git a/variants/nrf52840/wio-sdk-wm1110/platformio.ini b/variants/nrf52840/wio-sdk-wm1110/platformio.ini
index 2deeeedcf..7c11ef6f6 100644
--- a/variants/nrf52840/wio-sdk-wm1110/platformio.ini
+++ b/variants/nrf52840/wio-sdk-wm1110/platformio.ini
@@ -8,7 +8,18 @@ extra_scripts =
   extra_scripts/disable_adafruit_usb.py
 
 # Remove adafruit USB serial from the build (it is incompatible with using the ch340 serial chip on this board)
-build_unflags = ${nrf52840_base:build_unflags} -DUSBCON -DUSE_TINYUSB
+build_unflags =
+  -Ofast
+  -Og
+  -ggdb3
+  -ggdb2
+  -g3
+  -g2
+  -g
+  -g1
+  -g0
+  -DUSBCON
+  -DUSE_TINYUSB
 build_flags = ${nrf52840_base.build_flags}
   -Ivariants/nrf52840/wio-sdk-wm1110
   -Isrc/platform/nrf52/softdevice