diff --git a/subsys/bluetooth/controller/ll_sw/nordic/lll/lll_adv.c b/subsys/bluetooth/controller/ll_sw/nordic/lll/lll_adv.c
index 5b27646d43f..ff94a69d3ce 100644
--- a/subsys/bluetooth/controller/ll_sw/nordic/lll/lll_adv.c
+++ b/subsys/bluetooth/controller/ll_sw/nordic/lll/lll_adv.c
@@ -478,7 +478,7 @@ static void isr_done(void *param)
 #if defined(CONFIG_BT_CTLR_ADV_EXT)
 		if (lll->aux) {
 			lll_adv_aux_offset_fill(lll->aux->ticks_offset,
-						start_us + 1, pdu);
+						start_us, pdu);
 		}
 #else /* !CONFIG_BT_CTLR_ADV_EXT */
 		ARG_UNUSED(pdu);
diff --git a/subsys/bluetooth/controller/ll_sw/ull_adv_aux.c b/subsys/bluetooth/controller/ll_sw/ull_adv_aux.c
index ee730f62eb0..abc712f9f7f 100644
--- a/subsys/bluetooth/controller/ll_sw/ull_adv_aux.c
+++ b/subsys/bluetooth/controller/ll_sw/ull_adv_aux.c
@@ -710,11 +710,20 @@ static void mfy_aux_offset_get(void *param)
 		LL_ASSERT(id != TICKER_NULL);
 	} while (id != ticker_id);
 
-	/* NOTE: as remainder not used in scheduling primary PDU
-	 * packet timer starts transmission after 1 tick hence the +1.
+	/* Store the ticks offset for population in other advertising primary
+	 * channel PDUs.
 	 */
-	aux->lll.ticks_offset = ticks_to_expire + 1;
+	aux->lll.ticks_offset = ticks_to_expire;
 
+	/* NOTE: as remainder used in scheduling primary PDU not available,
+	 * compensate with a probable jitter of one ticker resolution unit that
+	 * would be included in the packet timer capture when scheduling next
+	 * advertising primary channel PDU.
+	 */
+	aux->lll.ticks_offset +=
+		HAL_TICKER_US_TO_TICKS(EVENT_TICKER_RES_MARGIN_US);
+
+	/* FIXME: we are in ULL_LOW context, fill offset in LLL context */
 	pdu = lll_adv_data_curr_get(&adv->lll);
 	lll_adv_aux_offset_fill(ticks_to_expire, 0, pdu);
 }