diff --git a/src/Backends/Helmholtz/HelmholtzEOSMixtureBackend.cpp b/src/Backends/Helmholtz/HelmholtzEOSMixtureBackend.cpp
index c1ba56d2..6ee3689b 100644
--- a/src/Backends/Helmholtz/HelmholtzEOSMixtureBackend.cpp
+++ b/src/Backends/Helmholtz/HelmholtzEOSMixtureBackend.cpp
@@ -697,17 +697,6 @@ void HelmholtzEOSMixtureBackend::calc_Tmin_sat(long double &Tmin_satL, long doub
         throw ValueError("calc_Tmin_sat not yet defined for mixtures");
     }
 }
-long double HelmholtzEOSMixtureBackend::calc_saturated_state_keyed_output(HelmholtzEOSMixtureBackend HEOS, parameters key)
-{
-    switch (key){
-        case iDmolar: return HEOS.rhomolar();
-        case iDmass: return HEOS.rhomass();
-        case iHmolar: return HEOS.hmolar();
-        case iHmass: return HEOS.hmass();
-        case iviscosity: return HEOS.viscosity();
-        case iconductivity: return HEOS.conductivity();
-    }
-}
 
 void HelmholtzEOSMixtureBackend::calc_pmin_sat(long double &pmin_satL, long double &pmin_satV)
 {