diff --git a/Dev-Notes.md b/Dev-Notes.md
index 50f0e3b..09e66dd 100644
--- a/Dev-Notes.md
+++ b/Dev-Notes.md
@@ -13,7 +13,11 @@ WITH data(gatewayId, time, alt, lat, lon, rssi) AS
     CAST (object -> 'gpsLocation' -> '1' ->> 'longitude' AS FLOAT),
     CAST (rx_info -> 0 ->> 'rssi' AS INTEGER)
   FROM event_up)
-SELECT gatewayId, time, ST_MakePoint(lon, lat, alt) AS location, rssi
+SELECT 
+  gatewayId,
+  time,
+  ST_SetSRID(ST_MakePoint(lon, lat, alt), 4326) AS location,
+  rssi
 FROM data
 WHERE gatewayId = '8d269c95ddfe92eb';
 ```