diff --git a/dune/xt/grid/view/subdomain/view.hh b/dune/xt/grid/view/subdomain/view.hh
index 29f33fe461ba683bc901e656047e330e2853778e..fff7df07d07b216f5412829260798985342399ee 100644
--- a/dune/xt/grid/view/subdomain/view.hh
+++ b/dune/xt/grid/view/subdomain/view.hh
@@ -184,7 +184,7 @@ public:
         *globalGridView_, indexContainer_, true);
   }
 
-  int boundaryId(const Intersection& intersection) const
+  int boundaryId(const Intersection& /*intersection*/) const
   {
     DUNE_THROW(Dune::NotImplemented, "Call intersection.boundaryId() instead!");
     return -1;