diff --git a/autoMatricesProtub/mainAutoMatProtub.m b/autoMatricesProtub/mainAutoMatProtub.m
index ba18176b90822310ccdaaed54fa0d027b1bdf7e2..5dcd6e0dbefdf3ef3a38dc9fae84e8d6fdc714af 100644
--- a/autoMatricesProtub/mainAutoMatProtub.m
+++ b/autoMatricesProtub/mainAutoMatProtub.m
@@ -29,7 +29,7 @@ autoMatSettings.vars.hprot = rocket.airbrakes.height;
 autoMatSettings.varsHighAOA.hprot = [];
 
 % overriding xcg number if the motor is solid
-if ~rocket.motor.isHRE && autoMatSettings.vars.Nxcg ~= 2
+if rocket.motor.type == MotorType.Solid && autoMatSettings.vars.Nxcg ~= 2
     warning('Overwriting xCg to 2 for solid rocket motors.')
     autoMatSettings.vars.Nxcg = 2;
 end