diff --git a/include/alpaka/vec/Vec.hpp b/include/alpaka/vec/Vec.hpp
index ed462d2e7d74..79f103119066 100644
--- a/include/alpaka/vec/Vec.hpp
+++ b/include/alpaka/vec/Vec.hpp
@@ -668,10 +668,7 @@ namespace alpaka
                 ALPAKA_UNREACHABLE({});
             }
         };
-    } // namespace trait
 
-    namespace trait
-    {
         //! ReverseVec specialization for Vec.
         template<typename TDim, typename TVal>
         struct ReverseVec<Vec<TDim, TVal>>