diff --git a/GEMstack/knowledge/vehicle/gem_e4_sensor_environment.yaml b/GEMstack/knowledge/vehicle/gem_e4_sensor_environment.yaml
index a0c611b37..10b795a7f 100644
--- a/GEMstack/knowledge/vehicle/gem_e4_sensor_environment.yaml
+++ b/GEMstack/knowledge/vehicle/gem_e4_sensor_environment.yaml
@@ -2,5 +2,5 @@ ros_topics:
   top_lidar: /ouster/points
   front_camera: /oak/rgb/image_raw
   front_depth: /oak/stereo/image_raw
-  gnss: /septentrio_gnss/insnavgeod
-  
\ No newline at end of file
+  gnss: /novatel/inspva
+