diff --git a/MaterialLib/FractureModels/LinearElasticIsotropic.h b/MaterialLib/FractureModels/LinearElasticIsotropic.h
index df8ec5231f4c5484dd340c5baada20ecf74540e3..c236be4e10b34a45f10d0b99867376d7d31a19fc 100644
--- a/MaterialLib/FractureModels/LinearElasticIsotropic.h
+++ b/MaterialLib/FractureModels/LinearElasticIsotropic.h
@@ -31,8 +31,8 @@ public:
         using P = ProcessLib::Parameter<double>;
         using X = ProcessLib::SpatialPosition;
 
-        MaterialProperties(P const& normal_stiffness, P const& shear_stiffness)
-            : normal_stiffness(normal_stiffness), shear_stiffness(shear_stiffness)
+        MaterialProperties(P const& normal_stiffness_, P const& shear_stiffness_)
+            : normal_stiffness(normal_stiffness_), shear_stiffness(shear_stiffness_)
         {
         }
 
diff --git a/MaterialLib/FractureModels/MohrCoulomb.h b/MaterialLib/FractureModels/MohrCoulomb.h
index 017e96e60c7d2b68a99c4668ad31b4dd8081ba17..cd7d974ace555ba92bffcbbf40060ab4c6b9caed 100644
--- a/MaterialLib/FractureModels/MohrCoulomb.h
+++ b/MaterialLib/FractureModels/MohrCoulomb.h
@@ -32,12 +32,12 @@ public:
         using X = ProcessLib::SpatialPosition;
 
         MaterialProperties(
-                P const& normal_stiffness, P const& shear_stiffness,
-                P const& friction_angle, P const& dilatancy_angle,
-                P const& cohesion)
-            : normal_stiffness(normal_stiffness), shear_stiffness(shear_stiffness),
-              friction_angle(friction_angle), dilatancy_angle(dilatancy_angle),
-              cohesion(cohesion)
+                P const& normal_stiffness_, P const& shear_stiffness_,
+                P const& friction_angle_, P const& dilatancy_angle_,
+                P const& cohesion_)
+            : normal_stiffness(normal_stiffness_), shear_stiffness(shear_stiffness_),
+              friction_angle(friction_angle_), dilatancy_angle(dilatancy_angle_),
+              cohesion(cohesion_)
         {
         }