diff --git a/subsys/bluetooth/controller/ll_sw/nordic/lll/lll.c b/subsys/bluetooth/controller/ll_sw/nordic/lll/lll.c
index 30fca6d1e2e..ed459c20d19 100644
--- a/subsys/bluetooth/controller/ll_sw/nordic/lll/lll.c
+++ b/subsys/bluetooth/controller/ll_sw/nordic/lll/lll.c
@@ -221,8 +221,13 @@ int lll_init(void)
 			   radio_nrf5_isr, IRQ_CONNECT_FLAGS);
 	IRQ_CONNECT(RTC0_IRQn, CONFIG_BT_CTLR_ULL_HIGH_PRIO,
 		    rtc0_nrf5_isr, NULL, 0);
+#if defined(CONFIG_BT_CTLR_ZLI)
+	IRQ_DIRECT_CONNECT(HAL_SWI_RADIO_IRQ, CONFIG_BT_CTLR_LLL_PRIO,
+			   swi_lll_nrf5_isr, IRQ_CONNECT_FLAGS);
+#else
 	IRQ_CONNECT(HAL_SWI_RADIO_IRQ, CONFIG_BT_CTLR_LLL_PRIO,
 		    swi_lll_nrf5_isr, NULL, IRQ_CONNECT_FLAGS);
+#endif
 #if defined(CONFIG_BT_CTLR_LOW_LAT) || \
 	(CONFIG_BT_CTLR_ULL_HIGH_PRIO != CONFIG_BT_CTLR_ULL_LOW_PRIO)
 	IRQ_CONNECT(HAL_SWI_JOB_IRQ, CONFIG_BT_CTLR_ULL_LOW_PRIO,