diff --git a/dune/solvers/common/Makefile.am b/dune/solvers/common/Makefile.am
index 01aa34682ae5404647a22b2f902cdfbe91f4bb1c..7abdcc50ac8d1541ea85780dfa038cf5ba1d0b0f 100644
--- a/dune/solvers/common/Makefile.am
+++ b/dune/solvers/common/Makefile.am
@@ -1,7 +1,8 @@
 SUBDIRS =
 
 commondir = $(includedir)/dune/solvers/common
-common_HEADERS = boxconstraint.hh \
+common_HEADERS = arithmetic.hh \
+                 boxconstraint.hh \
                  genericvectortools.hh \
                  canignore.hh \
                  interval.hh \