diff --git a/include/alpaka/mem/Visibility.hpp b/include/alpaka/mem/Visibility.hpp
index db32232f42b8..90f941457125 100644
--- a/include/alpaka/mem/Visibility.hpp
+++ b/include/alpaka/mem/Visibility.hpp
@@ -111,12 +111,13 @@ namespace alpaka
                 typename alpaka::trait::MemVisibility<TBuf>::type,
                 typename alpaka::trait::MemVisibility<Platform>::type>::value;
         }
-
-        return alpaka::meta::Contains<
-            typename alpaka::trait::MemVisibility<TBuf>::type,
-            typename alpaka::trait::MemVisibility<T>::type>::value;
-
-        // ALPAKA_UNREACHABLE({});
+        else
+        {
+            return alpaka::meta::Contains<
+                typename alpaka::trait::MemVisibility<TBuf>::type,
+                typename alpaka::trait::MemVisibility<T>::type>::value;
+        }
+        ALPAKA_UNREACHABLE({});
     }
 
     template<typename TDev, typename TBuf>