diff --git a/core/hdd/inc/wlan_hdd_main.h b/core/hdd/inc/wlan_hdd_main.h
index b10b92237d8f..0e53f9b11c7e 100644
--- a/core/hdd/inc/wlan_hdd_main.h
+++ b/core/hdd/inc/wlan_hdd_main.h
@@ -2448,21 +2448,6 @@ struct hdd_context *hdd_context_create(struct device *dev);
 void hdd_context_destroy(struct hdd_context *hdd_ctx);
 
 int hdd_wlan_notify_modem_power_state(int state);
-#ifdef QCA_HT_2040_COEX
-/**
- * hdd_wlan_set_ht2040_mode() - notify FW with HT20/HT40 mode
- * @adapter: pointer to adapter
- * @sta_id: station id
- * @sta_mac: station MAC address
- * @channel_type: channel type
- *
- * This function notifies FW with HT20/HT40 mode
- *
- * Return: 0 if successful, error number otherwise
- */
-int hdd_wlan_set_ht2040_mode(struct hdd_adapter *adapter, uint16_t sta_id,
-			     struct qdf_mac_addr sta_mac, int channel_type);
-#endif
 
 void wlan_hdd_send_svc_nlink_msg(int radio, int type, void *data, int len);
 #ifdef FEATURE_WLAN_AUTO_SHUTDOWN
diff --git a/core/hdd/src/wlan_hdd_main.c b/core/hdd/src/wlan_hdd_main.c
index 1047dd74788d..0a2884e803a7 100644
--- a/core/hdd/src/wlan_hdd_main.c
+++ b/core/hdd/src/wlan_hdd_main.c
@@ -7453,36 +7453,6 @@ static void hdd_skip_acs_scan_timer_handler(void *data)
 }
 #endif
 
-#ifdef QCA_HT_2040_COEX
-int hdd_wlan_set_ht2040_mode(struct hdd_adapter *adapter, uint16_t sta_id,
-			     struct qdf_mac_addr sta_mac, int channel_type)
-{
-	int status;
-	QDF_STATUS qdf_status;
-	struct hdd_context *hdd_ctx;
-	mac_handle_t mac_handle;
-
-	hdd_ctx = WLAN_HDD_GET_CTX(adapter);
-
-	status = wlan_hdd_validate_context(hdd_ctx);
-	if (status)
-		return status;
-
-	mac_handle = hdd_ctx->mac_handle;
-	if (!mac_handle)
-		return -EINVAL;
-
-	qdf_status = sme_notify_ht2040_mode(mac_handle, sta_id, sta_mac,
-					    adapter->session_id, channel_type);
-	if (QDF_STATUS_SUCCESS != qdf_status) {
-		hdd_err("Fail to send notification with ht2040 mode");
-		return -EINVAL;
-	}
-
-	return 0;
-}
-#endif
-
 /**
  * hdd_wlan_notify_modem_power_state() - notify FW with modem power status
  * @state: state