diff --git a/wpa_supplicant/wpa_supplicant_i.h b/wpa_supplicant/wpa_supplicant_i.h
index b2e2aa29a..5d8e4d62e 100644
--- a/wpa_supplicant/wpa_supplicant_i.h
+++ b/wpa_supplicant/wpa_supplicant_i.h
@@ -34,6 +34,7 @@ struct ibss_rsn;
 struct scan_info;
 struct wpa_bss;
 struct wpa_scan_results;
+struct hostapd_hw_modes;
 
 /*
  * Forward declarations of private structures used within the ctrl_iface