diff --git a/dune/gdt/spaces/fv/default.hh b/dune/gdt/spaces/fv/default.hh
index 048ea840f8a8a940d542ef945ae0071312a3b7f3..95953739194f53f8e8ffb4af2ce54aeeb3c04883 100644
--- a/dune/gdt/spaces/fv/default.hh
+++ b/dune/gdt/spaces/fv/default.hh
@@ -61,12 +61,12 @@ public:
 
 template <class GridViewImp, class RangeFieldImp, size_t rangeDim>
 class Default<GridViewImp, RangeFieldImp, rangeDim, 1>
-    : public FVInterface<internal::DefaultTraits<GridViewImp, RangeFieldImp, rangeDim, 1>, GridViewImp::dimension,
-                         rangeDim, 1>
+    : public FvSpaceInterface<internal::DefaultTraits<GridViewImp, RangeFieldImp, rangeDim, 1>, GridViewImp::dimension,
+                              rangeDim, 1>
 {
   typedef Default<GridViewImp, RangeFieldImp, rangeDim, 1> ThisType;
-  typedef FVInterface<internal::DefaultTraits<GridViewImp, RangeFieldImp, rangeDim, 1>, GridViewImp::dimension,
-                      rangeDim, 1> BaseType;
+  typedef FvSpaceInterface<internal::DefaultTraits<GridViewImp, RangeFieldImp, rangeDim, 1>, GridViewImp::dimension,
+                           rangeDim, 1> BaseType;
 
 public:
   typedef typename internal::DefaultTraits<GridViewImp, RangeFieldImp, rangeDim, 1> Traits;
diff --git a/dune/gdt/spaces/fv/defaultproduct.hh b/dune/gdt/spaces/fv/defaultproduct.hh
index 6a76968c9c9e7f99285204a4c2e095e24ca5c26c..76e1389a582440bc9eecd783d479a58f1177a06c 100644
--- a/dune/gdt/spaces/fv/defaultproduct.hh
+++ b/dune/gdt/spaces/fv/defaultproduct.hh
@@ -53,14 +53,14 @@ public:
 
 template <class GridViewImp, class RangeFieldImp, size_t rangeDim>
 class DefaultProduct<GridViewImp, RangeFieldImp, rangeDim, 1>
-    : public Dune::GDT::Spaces::FVInterface<internal::DefaultProductTraits<GridViewImp, RangeFieldImp, rangeDim, 1>,
-                                            GridViewImp::dimension, rangeDim, 1>,
+    : public Dune::GDT::FvSpaceInterface<internal::DefaultProductTraits<GridViewImp, RangeFieldImp, rangeDim, 1>,
+                                         GridViewImp::dimension, rangeDim, 1>,
       public Dune::GDT::ProductSpaceInterface<internal::DefaultProductTraits<GridViewImp, RangeFieldImp, rangeDim, 1>,
                                               GridViewImp::dimension, rangeDim, 1>
 {
   typedef DefaultProduct<GridViewImp, RangeFieldImp, rangeDim, 1> ThisType;
-  typedef Dune::GDT::Spaces::FVInterface<internal::DefaultProductTraits<GridViewImp, RangeFieldImp, rangeDim, 1>,
-                                         GridViewImp::dimension, rangeDim, 1> BaseType;
+  typedef Dune::GDT::FvSpaceInterface<internal::DefaultProductTraits<GridViewImp, RangeFieldImp, rangeDim, 1>,
+                                      GridViewImp::dimension, rangeDim, 1> BaseType;
   typedef Default<GridViewImp, RangeFieldImp, rangeDim, 1> DefaultFVSpaceType;
 
 public:
diff --git a/dune/gdt/spaces/fv/interface.hh b/dune/gdt/spaces/fv/interface.hh
index 37bc8169e97508539ff7b5becca68007b14aa34f..953b850fd54b90cb32d52b9ff5afd4f8528684f1 100644
--- a/dune/gdt/spaces/fv/interface.hh
+++ b/dune/gdt/spaces/fv/interface.hh
@@ -12,11 +12,10 @@
 
 namespace Dune {
 namespace GDT {
-namespace Spaces {
 
 
 template <class Traits, size_t domainDim, size_t rangeDim, size_t rangeDimCols = 1>
-class FVInterface : public SpaceInterface<Traits, domainDim, rangeDim, rangeDimCols>
+class FvSpaceInterface : public SpaceInterface<Traits, domainDim, rangeDim, rangeDimCols>
 {
   typedef SpaceInterface<Traits, domainDim, rangeDim, rangeDimCols> BaseType;
 
@@ -40,10 +39,9 @@ public:
   {
     static_assert(AlwaysFalse<S>::value, "FV spaces do not implement constraints!");
   }
-}; // class FVInterface
+}; // class FvSpaceInterface
 
 
-} // namespace Spaces
 namespace internal {
 
 
@@ -64,7 +62,7 @@ struct is_fv_space_helper
 
 template <class S, bool candidate = internal::is_fv_space_helper<S>::is_candidate>
 struct is_fv_space
-    : public std::is_base_of<Spaces::FVInterface<typename S::Traits, S::dimDomain, S::dimRange, S::dimRangeCols>, S>
+    : public std::is_base_of<FvSpaceInterface<typename S::Traits, S::dimDomain, S::dimRange, S::dimRangeCols>, S>
 {
 };