diff --git a/src/scan.c b/src/scan.c
index 03fe15f4..7649487c 100644
--- a/src/scan.c
+++ b/src/scan.c
@@ -138,7 +138,7 @@ static void scan_request_failed(struct scan_context *sc,
 	if (sr->trigger)
 		sr->trigger(err, sr->userdata);
 	else if (sr->callback)
-		sr->callback(sc->ifindex, err, NULL, sr->userdata);
+		sr->callback(err, NULL, sr->userdata);
 
 	scan_request_free(sr);
 }
@@ -1176,7 +1176,7 @@ static void scan_finished(struct scan_context *sc, uint32_t wiphy,
 	}
 
 	if (callback)
-		new_owner = callback(sc->ifindex, err, bss_list, userdata);
+		new_owner = callback(err, bss_list, userdata);
 
 	if (sr)
 		scan_request_free(sr);
diff --git a/src/scan.h b/src/scan.h
index 446e37ec..907f75aa 100644
--- a/src/scan.h
+++ b/src/scan.h
@@ -33,8 +33,7 @@ enum scan_state {
 
 typedef void (*scan_func_t)(struct l_genl_msg *msg, void *user_data);
 typedef void (*scan_trigger_func_t)(int, void *);
-typedef bool (*scan_notify_func_t)(uint32_t ifindex, int err,
-					struct l_queue *bss_list,
+typedef bool (*scan_notify_func_t)(int err, struct l_queue *bss_list,
 					void *userdata);
 typedef void (*scan_destroy_func_t)(void *userdata);
 typedef void (*scan_freq_set_func_t)(uint32_t freq, void *userdata);
diff --git a/src/station.c b/src/station.c
index f7f3fa97..3c865f26 100644
--- a/src/station.c
+++ b/src/station.c
@@ -592,8 +592,7 @@ not_supported:
 	return NULL;
 }
 
-static bool new_scan_results(uint32_t ifindex, int err,
-				struct l_queue *bss_list, void *userdata)
+static bool new_scan_results(int err, struct l_queue *bss_list, void *userdata)
 {
 	struct station *station = userdata;
 	struct l_dbus *dbus = dbus_get_bus();
@@ -1076,8 +1075,7 @@ static void station_roam_scan_triggered(int err, void *user_data)
 	 */
 }
 
-static bool station_roam_scan_notify(uint32_t ifindex, int err,
-					struct l_queue *bss_list,
+static bool station_roam_scan_notify(int err, struct l_queue *bss_list,
 					void *userdata)
 {
 	struct station *station = userdata;
@@ -1808,7 +1806,7 @@ static void station_hidden_network_scan_triggered(int err, void *user_data)
 				dbus_error_failed(station->connect_pending));
 }
 
-static bool station_hidden_network_scan_results(uint32_t ifindex, int err,
+static bool station_hidden_network_scan_results(int err,
 						struct l_queue *bss_list,
 						void *userdata)
 {
diff --git a/src/wsc.c b/src/wsc.c
index 64a5c2a9..9b20af99 100644
--- a/src/wsc.c
+++ b/src/wsc.c
@@ -560,8 +560,7 @@ static void pin_timeout(struct l_timeout *timeout, void *user_data)
 					wsc_error_time_expired(wsc->pending));
 }
 
-static bool push_button_scan_results(uint32_t ifindex, int err,
-					struct l_queue *bss_list,
+static bool push_button_scan_results(int err, struct l_queue *bss_list,
 					void *userdata)
 {
 	struct wsc *wsc = userdata;
@@ -718,8 +717,7 @@ static bool authorized_macs_contains(const uint8_t *authorized_macs,
 	return false;
 }
 
-static bool pin_scan_results(uint32_t ifindex, int err,
-				struct l_queue *bss_list, void *userdata)
+static bool pin_scan_results(int err, struct l_queue *bss_list, void *userdata)
 {
 	static const uint8_t wildcard_address[] =
 					{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };