diff --git a/src/Mod/Material/StandardMaterial/Concrete.FCMat b/src/Mod/Material/StandardMaterial/Concrete.FCMat
index 99462b07e..753912494 100644
--- a/src/Mod/Material/StandardMaterial/Concrete.FCMat
+++ b/src/Mod/Material/StandardMaterial/Concrete.FCMat
@@ -10,7 +10,7 @@ Name=Concrete
 SpecificPrice=
 Father=Aggregate
 ProductURL=http://en.wikipedia.org/wiki/Concrete
-SpecificWeight=2400 kg/m³
+SpecificWeight=2400
 Description=A standard C-25 construction concrete
 
 [Mechanical]