diff --git a/src/unitvector.hh b/src/unitvector.hh
index 773a63652645533c4b23b0d0f47581cb29e6338e..65f1795d396e3f92a56280c2120eef1e7e16238b 100644
--- a/src/unitvector.hh
+++ b/src/unitvector.hh
@@ -149,7 +149,7 @@ public:
     }
 
 
-    //private:
+private:
 
     Dune::FieldVector<double,dim> data_;
 };