diff --git a/boards/nrf6310/include/periph_conf.h b/boards/nrf6310/include/periph_conf.h
index 9fd9236dfd..d87050ddee 100644
--- a/boards/nrf6310/include/periph_conf.h
+++ b/boards/nrf6310/include/periph_conf.h
@@ -36,7 +36,6 @@ extern "C" {
  * @{
  */
 #define UART_NUMOF          (1U)
-#define UART_0_EN           1
 #define UART_IRQ_PRIO       1
 
 /* UART pin configuration */