diff --git a/wmi/inc/wmi_unified_param.h b/wmi/inc/wmi_unified_param.h
index 56c1c99fcc22..afef74812c52 100644
--- a/wmi/inc/wmi_unified_param.h
+++ b/wmi/inc/wmi_unified_param.h
@@ -1232,6 +1232,8 @@ struct ap_ps_params {
 #define WMI_HOST_SCAN_CHAN_MODE_SHIFT	16
 #define WMI_HOST_SCAN_CHAN_MODE_MASK	0xff
 
+#define WMI_HOST_MAX_CHANS_PER_WMI_CMD  58
+
 /**
  * struct scan_chan_list_params  - scan channel list cmd parameter
  * @num_scan_chans: no of scan channels
@@ -1267,11 +1269,13 @@ struct scan_chan_list_params {
  * @pdev_id: pdev_id
  * @num_chan: no of scan channels
  * @nallchans: nall chans
+ * @append: append to existing chan list
  * @ch_param: pointer to channel_paramw
  */
 struct scan_chan_list_params {
 	uint32_t pdev_id;
 	uint16_t nallchans;
+	bool append;
 	struct channel_param ch_param[1];
 };
 #endif
diff --git a/wmi/src/wmi_unified_tlv.c b/wmi/src/wmi_unified_tlv.c
index 74dea8b22efe..12d042001704 100644
--- a/wmi/src/wmi_unified_tlv.c
+++ b/wmi/src/wmi_unified_tlv.c
@@ -2701,6 +2701,9 @@ static QDF_STATUS send_scan_chan_list_cmd_tlv(wmi_unified_t wmi_handle,
 
 	WMI_LOGD("no of channels = %d, len = %d", chan_list->nallchans, len);
 
+	if (chan_list->append)
+		cmd->flags |= APPEND_TO_EXISTING_CHAN_LIST;
+
 	cmd->pdev_id = wmi_handle->ops->convert_pdev_id_host_to_target(
 							chan_list->pdev_id);
 	cmd->num_scan_chans = chan_list->nallchans;