diff --git a/Framework/Units/PhysicalUnits.h b/Framework/Units/PhysicalUnits.h
index 0bcaa7a45216ee861e5e632b75b34cd6aabed458..0f6c82c2e736d92351cacbae1ce729235cad7d7e 100644
--- a/Framework/Units/PhysicalUnits.h
+++ b/Framework/Units/PhysicalUnits.h
@@ -52,15 +52,6 @@ namespace corsika::units::si {
   using EnergyType = phys::units::quantity<phys::units::energy_d, double>;
   using MassType = phys::units::quantity<phys::units::mass_d, double>;
   using MassDensityType = phys::units::quantity<phys::units::mass_density_d, double>;
-
-  // defining momentum you suckers
-  // dimensions, i.e. composition in base SI dimensions
-  using momentum_d                     = phys::units::dimensions< 1, 1, -1 >;
-  // defining the unit of momentum, so far newton-meter, maybe go to HEP?
-  constexpr phys::units::quantity< momentum_d > newton_second   { meter * kilogram / second };
-  // defining the type
-
-  using MomentumType = phys::units::quantity<momentum_d, double>;
   using CrossSectionType = phys::units::quantity<sigma_d, double>;
 
 } // end namespace corsika::units::si