diff --git a/ProcessLib/TH2M/ConstitutiveRelations/ConstitutiveData.h b/ProcessLib/TH2M/ConstitutiveRelations/ConstitutiveData.h
index a543613ec98c844a8362babf9e98a08ae0ad0c40..00e55b8cbabd0e133e50f1db1354afe6b3a00ff0 100644
--- a/ProcessLib/TH2M/ConstitutiveRelations/ConstitutiveData.h
+++ b/ProcessLib/TH2M/ConstitutiveRelations/ConstitutiveData.h
@@ -181,8 +181,6 @@ struct ConstitutiveTempData
     double drho_h_eff_dT = std::numeric_limits<double>::quiet_NaN();
     double drho_h_eff_dp_GR = std::numeric_limits<double>::quiet_NaN();
     double drho_h_eff_dp_cap = std::numeric_limits<double>::quiet_NaN();
-    double dh_G_dT = std::numeric_limits<double>::quiet_NaN();
-    double dh_L_dT = std::numeric_limits<double>::quiet_NaN();
     double dfC_4_MCpG_dp_GR = std::numeric_limits<double>::quiet_NaN();
     double dfC_4_MCpG_dT = std::numeric_limits<double>::quiet_NaN();
     double dfC_4_MCT_dT = std::numeric_limits<double>::quiet_NaN();