diff --git a/arch/arm/src/lpc43xx/lpc43_serial.c b/arch/arm/src/lpc43xx/lpc43_serial.c
index 05f7bc61712..13904d2054e 100644
--- a/arch/arm/src/lpc43xx/lpc43_serial.c
+++ b/arch/arm/src/lpc43xx/lpc43_serial.c
@@ -443,11 +443,13 @@ static inline void up_disableuartint(struct up_dev_s *priv, uint32_t *ier)
  * Name: up_restoreuartint
  ****************************************************************************/
 
+#ifdef HAVE_SERIAL_CONSOLE
 static inline void up_restoreuartint(struct up_dev_s *priv, uint32_t ier)
 {
   priv->ier |= ier & UART_IER_ALLIE;
   up_serialout(priv, LPC43_UART_IER_OFFSET, priv->ier);
 }
+#endif
 
 /****************************************************************************
  * Name: up_enablebreaks