diff --git a/src/Mod/Material/StandardMaterial/AlZn4-5Mg1F35.FCMat b/src/Mod/Material/StandardMaterial/AlZn4-5Mg1F35.FCMat
index 1721de8a98..135511b903 100644
--- a/src/Mod/Material/StandardMaterial/AlZn4-5Mg1F35.FCMat
+++ b/src/Mod/Material/StandardMaterial/AlZn4-5Mg1F35.FCMat
@@ -8,7 +8,7 @@ Name = [DE]AlZn4,5Mg1F35
 NameDE = AlZn4,5Mg1F35
 Father = Metal
 YoungsModulus = 70000 MPa
-UltimateTensileStrength = 350
+UltimateTensileStrength = 350 MPa
 PoissonRatio = 0.3
 Density = 2700 kg/m^3
 KindOfMaterial = Aluminium