diff --git a/src/scan.c b/src/scan.c
index f49d2f2a..36c85f43 100644
--- a/src/scan.c
+++ b/src/scan.c
@@ -927,7 +927,7 @@ void scan_periodic_start(uint64_t wdev_id, scan_trigger_func_t trigger,
 	sc = l_queue_find(scan_contexts, scan_context_match, &wdev_id);
 
 	if (!sc) {
-		l_error("scan_periodic_start called without scan_wdev_add");
+		l_error("%s called without scan_wdev_add", __func__);
 		return;
 	}
 
diff --git a/src/wsc.c b/src/wsc.c
index 224c721a..0457ebf7 100644
--- a/src/wsc.c
+++ b/src/wsc.c
@@ -664,7 +664,7 @@ static void wsc_check_can_connect(struct wsc_station_dbus *wsc,
 	case STATION_STATE_AUTOCONNECT_QUICK:
 	case STATION_STATE_AUTOCONNECT_FULL:
 	case STATION_STATE_ROAMING:
-		l_warn("wsc_check_can_connect: invalid station state");
+		l_warn("%s: invalid station state", __func__);
 		break;
 	}
 error: