diff --git a/CoLo-AT/localization_algos/ekf_gs_bound.py b/CoLo-AT/localization_algos/ekf_gs_bound.py
index fe91db4da8083b8dc1da422d1765a0e39196a3b5..e80836a163c37180a881f474ae0d733540a2dcb5 100644
--- a/CoLo-AT/localization_algos/ekf_gs_bound.py
+++ b/CoLo-AT/localization_algos/ekf_gs_bound.py
@@ -72,7 +72,7 @@ class EKF_GS_BOUND(ekf_algo_framework):
 
 		var_range = self.var_range
 		var_range = self.var_range
-		range_max = self.range_max
+		range_max = self.max_range
 		var_bearing = self.var_bearing
 
 		R = np.matrix(max(var_range, range_max, var_bearing)*np.identity(2))