diff --git a/dune/solvers/common/Makefile.am b/dune/solvers/common/Makefile.am
index 8dcc53277779d89855a6abeee9471c46f805b8b5..d5bd877741a51ca6fbc8f0a1b3cab5ca98bb49f3 100644
--- a/dune/solvers/common/Makefile.am
+++ b/dune/solvers/common/Makefile.am
@@ -1,6 +1,9 @@
 SUBDIRS =
 
 commondir = $(includedir)/dune/dune-solvers/common
-common_HEADERS = canignore.hh preconditioner.hh staticmatrixtools.hh permutationmanager.hh
+common_HEADERS = canignore.hh \
+                 permutationmanager.hh \
+                 preconditioner.hh \
+                 staticmatrixtools.hh
 
 include $(top_srcdir)/am/global-rules