diff --git a/MidasCivil_Adapter/PrivateHelpers/GetSectionMaterialCombinations.cs b/MidasCivil_Adapter/PrivateHelpers/GetSectionMaterialCombinations.cs
index 6e87cc7f..0ba2945f 100644
--- a/MidasCivil_Adapter/PrivateHelpers/GetSectionMaterialCombinations.cs
+++ b/MidasCivil_Adapter/PrivateHelpers/GetSectionMaterialCombinations.cs
@@ -51,7 +51,11 @@ private static Dictionary<string, ISectionProperty> GetSectionMaterialCombinatio
                 materials.TryGetValue(materialId.ToString(), out material);
                 sectionProperties.TryGetValue(sectionPropertyId.ToString(), out section);
 
-                if (section is ISectionProperty)
+                if(section is SteelSection || section is ConcreteSection || section is AluminiumSection || section is TimberSection)
+                {
+                    materialSections.Add(materialId.ToString() + "," + sectionPropertyId.ToString(), section);
+                }
+                else
                 {
                     //Needed to get the ShapeProfile
                     GenericSection genericSection = (GenericSection)section;
@@ -101,10 +105,6 @@ private static Dictionary<string, ISectionProperty> GetSectionMaterialCombinatio
                             break;
                     }
                 }
-                else
-                {
-                    materialSections.Add(materialId.ToString() + "," + sectionPropertyId.ToString(),section);
-                }
 
             }