diff --git a/grid/alu3dgrid/Makefile.am b/grid/alu3dgrid/Makefile.am
index 0286314ac01dc30489a31064ace4c8d3c9e1d3bb..bb09ddc998613615242c26c9ddf2429666461f05 100644
--- a/grid/alu3dgrid/Makefile.am
+++ b/grid/alu3dgrid/Makefile.am
@@ -10,6 +10,6 @@ alu3dgrid_HEADERS = alu3dinclude.hh communications.hh \
   datahandle.hh memory.hh grid.hh grid_imp.cc \
   mappings.hh mappings_imp.cc topology.hh entity.hh entity_imp.cc \
   faceutility.hh faceutility_imp.cc geometry.hh geometry_imp.cc \
-  myautoptr.hh indexsets.hh indexsets_imp.cc iterator.hh iterator_imp.cc
+  myautoptr.hh indexsets.hh iterator.hh iterator_imp.cc
 
 include $(top_srcdir)/am/global-rules
diff --git a/grid/alu3dgrid/indexsets.hh b/grid/alu3dgrid/indexsets.hh
index 9c6c5221de24c4469488a3be22358bce275e5d5f..2e75007cf2328d8986787e5a5a9bbfb425f8d1f3 100644
--- a/grid/alu3dgrid/indexsets.hh
+++ b/grid/alu3dgrid/indexsets.hh
@@ -607,6 +607,4 @@ namespace Dune {
 
 } // end namespace Dune
 
-#include "indexsets_imp.cc"
-
 #endif
diff --git a/grid/alu3dgrid/indexsets_imp.cc b/grid/alu3dgrid/indexsets_imp.cc
deleted file mode 100644
index e44f2fae70ea41bf33533885933dc5a680adc188..0000000000000000000000000000000000000000
--- a/grid/alu3dgrid/indexsets_imp.cc
+++ /dev/null
@@ -1,7 +0,0 @@
-// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
-// vi: set et ts=4 sw=2 sts=2:
-#include "grid.hh"
-
-namespace Dune {
-  // * outsourcing from indexsets.hh desireable
-} // end namespace Dune