diff --git a/dune/common/alignment.hh b/dune/common/alignment.hh
index 9c642d9e5a3e06d4c516f64197d9ede4bf7bcc54..3711b6da6090b0e44278850afcb90035d155d6e9 100644
--- a/dune/common/alignment.hh
+++ b/dune/common/alignment.hh
@@ -3,6 +3,8 @@
 #ifndef DUNE_ALIGNMENT_HH
 #define DUNE_ALIGNMENT_HH
 
+#warning The header dune/common/alignment.hh is deprecated. Use alignof(T) instead of Dune::AlignmentOf<T>::value.
+
 #include <type_traits>
 
 namespace Dune