diff --git a/src/SIM/Property.h b/src/SIM/Property.h
index 7254fc45..bed4cf6b 100644
--- a/src/SIM/Property.h
+++ b/src/SIM/Property.h
@@ -38,7 +38,8 @@ struct Property
     ROBIN,
     DIRICHLET,
     DIRICHLET_INHOM,
-    DIRICHLET_ANASOL
+    DIRICHLET_ANASOL,
+    OTHER
   };
 
   Type   pcode; //!< Physical property code