diff --git a/nimble/drivers/nrf51/src/ble_hw.c b/nimble/drivers/nrf51/src/ble_hw.c
index 59bd46f83..c371af813 100644
--- a/nimble/drivers/nrf51/src/ble_hw.c
+++ b/nimble/drivers/nrf51/src/ble_hw.c
@@ -319,7 +319,9 @@ ble_hw_rng_init(ble_rng_isr_cb_t cb, int bias)
 
     /* If we were passed a function pointer we need to enable the interrupt */
     if (cb != NULL) {
+#ifndef RIOT_VERSION
         NVIC_SetPriority(RNG_IRQn, (1 << __NVIC_PRIO_BITS) - 1);
+#endif
 #if MYNEWT
         NVIC_SetVector(RNG_IRQn, (uint32_t)ble_rng_isr);
 #else
diff --git a/nimble/drivers/nrf51/src/ble_phy.c b/nimble/drivers/nrf51/src/ble_phy.c
index eac60f6d8..2ed81e973 100644
--- a/nimble/drivers/nrf51/src/ble_phy.c
+++ b/nimble/drivers/nrf51/src/ble_phy.c
@@ -908,7 +908,9 @@ ble_phy_init(void)
     NRF_PPI->CH[5].TEP = (uint32_t)&(NRF_RADIO->TASKS_DISABLE);
 
     /* Set isr in vector table and enable interrupt */
+#ifndef RIOT_VERSION
     NVIC_SetPriority(RADIO_IRQn, 0);
+#endif
 #if MYNEWT
     NVIC_SetVector(RADIO_IRQn, (uint32_t)ble_phy_isr);
 #else