diff --git a/features/FEATURE_BLE/targets/TARGET_NORDIC/TARGET_NORDIC_CORDIO/TARGET_NRF5x/stack/sources/pal_uart.c b/features/FEATURE_BLE/targets/TARGET_NORDIC/TARGET_NORDIC_CORDIO/TARGET_NRF5x/stack/sources/pal_uart.c
index 60f845db8c..5dbe137793 100644
--- a/features/FEATURE_BLE/targets/TARGET_NORDIC/TARGET_NORDIC_CORDIO/TARGET_NRF5x/stack/sources/pal_uart.c
+++ b/features/FEATURE_BLE/targets/TARGET_NORDIC/TARGET_NORDIC_CORDIO/TARGET_NRF5x/stack/sources/pal_uart.c
@@ -52,7 +52,7 @@ static struct
   PalUartConfig_t       config;         /*!< PAL UART configuration. */
   PalUartState_t        state;          /*!< PAL UART state. */
   nrfx_uarte_t          uart;           /*!< NRF UART driver instance */
-} palUartCb[UART0_ENABLED + UART1_ENABLED] = {{0, {0}, 0, {NRF_UARTE0, NRFX_UARTE0_INST_IDX}}};
+} palUartCb[NRFX_UARTE0_ENABLED + NRFX_UARTE1_ENABLED] = {{0, {0}, 0, {NRF_UARTE0, NRFX_UARTE0_INST_IDX}}};
 
 /**************************************************************************************************
   Local Functions