diff --git a/classes/bays/Motor.m b/classes/bays/Motor.m
index b30031f093ca10aa6f2b6be75e3710a2ebfaab71..3f1598b0ee18b1a993f1a08718b1eb09aa2740cb 100644
--- a/classes/bays/Motor.m
+++ b/classes/bays/Motor.m
@@ -33,7 +33,6 @@ classdef Motor < Bay
     properties(Dependent)
         mass                                        % [kg] Total Motor mass
         fuselageXCg         double                  % [m]  xcg of the engine fuselage only from tank tip
-        isHRE             logical                   % [-] Flag relateed to the type of motor: true if HRE
     end
 
     properties(Access = protected)
@@ -42,6 +41,10 @@ classdef Motor < Bay
         mission Mission = Mission()
     end
 
+    properties(SetAccess = protected)
+        isHRE             logical                   % [-] Flag relateed to the type of motor: true if HRE
+    end
+    
     methods
         function obj = Motor(mission, varIn)
             arguments(Input)