diff --git a/inc/compat/MicroBitSerial.h b/inc/compat/MicroBitSerial.h
index d16a233c..262a2079 100644
--- a/inc/compat/MicroBitSerial.h
+++ b/inc/compat/MicroBitSerial.h
@@ -109,7 +109,7 @@ class MicroBitSerial : public NRF52Serial
       *
       * @param rx the new reception pin.
       *
-      * @return CODAL_SERIAL_IN_USE if another fiber is currently transmitting or receiving, otherwise DEVICE_OK.
+      * @return DEVICE_SERIAL_IN_USE if another fiber is currently transmitting or receiving, otherwise DEVICE_OK.
       */
     int redirect(PinName tx, PinName rx);
 
@@ -121,7 +121,7 @@ class MicroBitSerial : public NRF52Serial
       *
       * @param rx the new reception pin.
       *
-      * @return CODAL_SERIAL_IN_USE if another fiber is currently transmitting or receiving, otherwise DEVICE_OK.
+      * @return DEVICE_SERIAL_IN_USE if another fiber is currently transmitting or receiving, otherwise DEVICE_OK.
       */
     int redirect(PinNumber tx, PinNumber rx);
 
diff --git a/source/compat/MicroBitSerial.cpp b/source/compat/MicroBitSerial.cpp
index f4cf8e18..41f2194f 100644
--- a/source/compat/MicroBitSerial.cpp
+++ b/source/compat/MicroBitSerial.cpp
@@ -109,7 +109,7 @@ MicroBitSerial::MicroBitSerial(PinNumber tx, PinNumber rx, uint8_t rxBufferSize,
   *
   * @param rx the new reception pin.
   *
-  * @return CODAL_SERIAL_IN_USE if another fiber is currently transmitting or receiving, otherwise DEVICE_OK.
+  * @return DEVICE_SERIAL_IN_USE if another fiber is currently transmitting or receiving, otherwise DEVICE_OK.
   */
 int MicroBitSerial::redirect(PinName tx, PinName rx) {
     static Pin *oldRx = NULL;
@@ -134,7 +134,7 @@ int MicroBitSerial::redirect(PinName tx, PinName rx) {
   *
   * @param rx the new reception pin.
   *
-  * @return CODAL_SERIAL_IN_USE if another fiber is currently transmitting or receiving, otherwise DEVICE_OK.
+  * @return DEVICE_SERIAL_IN_USE if another fiber is currently transmitting or receiving, otherwise DEVICE_OK.
   */
 int MicroBitSerial::redirect(PinNumber tx, PinNumber rx) {
     static Pin *oldRx = NULL;