diff --git a/targets/TARGET_STM/TARGET_STM32L4/TARGET_STM32L476xG/TARGET_SILICA_SENSOR_NODE/PinNames.h b/targets/TARGET_STM/TARGET_STM32L4/TARGET_STM32L476xG/TARGET_SILICA_SENSOR_NODE/PinNames.h
index aa7c7272a7..3b9199b274 100644
--- a/targets/TARGET_STM/TARGET_STM32L4/TARGET_STM32L476xG/TARGET_SILICA_SENSOR_NODE/PinNames.h
+++ b/targets/TARGET_STM/TARGET_STM32L4/TARGET_STM32L476xG/TARGET_SILICA_SENSOR_NODE/PinNames.h
@@ -138,8 +138,8 @@ typedef enum {
     BUTTON1 = USER_BUTTON,
     SERIAL_TX   = PC_12,
     SERIAL_RX   = PD_2,
-    USBTX       = PA_2,
-    USBRX       = PA_3,
+    USBTX       = PC_12,
+    USBRX       = PD_2,
     I2C_SCL     = PC_0,
     I2C_SDA     = PC_1,
     SPI_MOSI    = PG_11,