diff --git a/src/App/PropertyUnits.cpp b/src/App/PropertyUnits.cpp
index 6c0f60f8a815..867555456c15 100644
--- a/src/App/PropertyUnits.cpp
+++ b/src/App/PropertyUnits.cpp
@@ -555,6 +555,17 @@ PropertyMass::PropertyMass()
     setUnit(Base::Unit::Mass);
 }
 
+//**************************************************************************
+// PropertyMoment
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
+TYPESYSTEM_SOURCE(App::PropertyMoment, App::PropertyQuantity)
+
+PropertyMoment::PropertyMoment()
+{
+    setUnit(Base::Unit::Moment);
+}
+
 //**************************************************************************
 // PropertyPressure
 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++