diff --git a/dune.module b/dune.module
index 7b7e195a527db99af726168773c1cc8839c25645..a852c1549d4d2c8cf056eafd9299c8995e07621e 100644
--- a/dune.module
+++ b/dune.module
@@ -1,4 +1,4 @@
 Module: dune-istl
-Version: 2.1 svn
+Version: 2.1-svn
 Maintainer: dune@dune-project.org
 Depends: dune-common (>= 2.1)