diff --git a/MaterialLib/SolidModels/CreepBGRa.h b/MaterialLib/SolidModels/CreepBGRa.h
index affcbd6091f589ecd05d0c562c7e20e68262c516..31b8d9126151607d4c3d6c1ffdfe94f8a0459acd 100644
--- a/MaterialLib/SolidModels/CreepBGRa.h
+++ b/MaterialLib/SolidModels/CreepBGRa.h
@@ -40,8 +40,7 @@ template <int DisplacementDim>
 class CreepBGRa final : public LinearElasticIsotropic<DisplacementDim>
 {
 public:
-    static int const KelvinVectorSize =
-        MathLib::KelvinVector::KelvinVectorDimensions<DisplacementDim>::value;
+    using LinearElasticIsotropic<DisplacementDim>::KelvinVectorSize;
     using ResidualVectorType = Eigen::Matrix<double, KelvinVectorSize, 1>;
     using JacobianMatrix = Eigen::Matrix<double, KelvinVectorSize,
                                          KelvinVectorSize, Eigen::RowMajor>;