diff --git a/modules/util/lon_lat_grid.py b/modules/util/lon_lat_grid.py
index 8973cc5a23d741fd44aaec3cf320e418000195ba..f14c779e8507e4de6930d28a6a1facb97f556201 100644
--- a/modules/util/lon_lat_grid.py
+++ b/modules/util/lon_lat_grid.py
@@ -89,6 +89,8 @@ class LonLatGrid:
         xy = np.stack([lons, lats], axis=1)
 
         dist, indices = self.kd.query(np.deg2rad(xy))
+        dist = dist[0]
+        indices = indices[0]
         dist *= 6370000  # convert unit radius to meters
 
         valid = (indices < self.map_indexes.size) & (dist < self.closeness_threshold)