diff --git a/child_image/hci_ipc.conf b/child_image/hci_ipc.conf
index 8c899fe..ab9dc8e 100644
--- a/child_image/hci_ipc.conf
+++ b/child_image/hci_ipc.conf
@@ -19,6 +19,7 @@ CONFIG_BT_CTLR_ADV_EXT=y
 CONFIG_BT_CTLR_ADV_SET=2
 CONFIG_BT_CTLR_ADV_ISO_SET=2
 CONFIG_BT_CTLR_ADV_ISO_STREAM_COUNT=3
+CONFIG_BT_CTLR_SYNC_PERIODIC_ADV_LIST_SIZE=1
 
 # Support two links as a central, or one link as a peripheral
 CONFIG_BT_MAX_CONN=8