diff --git a/dune/istl/basearray.hh b/dune/istl/basearray.hh
index 72fc35fbb3e24fa2158e3cbd8db1217525cb3816..de9b0c0715c2919de6ce3df0d6e6c31d285d8738 100644
--- a/dune/istl/basearray.hh
+++ b/dune/istl/basearray.hh
@@ -30,7 +30,7 @@ namespace Dune {
            copy constuctor, assignment and destructor are all default.
 
            The constructor is made protected to emphasize that objects
-       are only usably in derived classes.
+       are only usable in derived classes.
 
            Error checking: no error checking is provided normally.
            Setting the compile time switch DUNE_ISTL_WITH_CHECKING