diff --git a/code/commercialFEM_fileList.f90 b/code/commercialFEM_fileList.f90
index 9bc13db63..8567da5b1 100644
--- a/code/commercialFEM_fileList.f90
+++ b/code/commercialFEM_fileList.f90
@@ -29,6 +29,7 @@
 #include "kinematics_vacancy_strain.f90"
 #include "kinematics_hydrogen_strain.f90"
 #include "plastic_none.f90"
+#include "plastic_isotropic.f90"
 #include "plastic_j2.f90"
 #include "plastic_phenopowerlaw.f90"
 #include "plastic_phenoplus.f90"