diff --git a/test/boxmodels/co2/Makefile.am b/test/boxmodels/co2/Makefile.am
index 6cb0a5a11fe26a7de80ee2b8641b6aacbaeb3cc9..e33a22244417a58326988636a38760a28f0c9931 100644
--- a/test/boxmodels/co2/Makefile.am
+++ b/test/boxmodels/co2/Makefile.am
@@ -1,7 +1,7 @@
 check_PROGRAMS = test_co2
 
 noinst_HEADERS = *.hh
-EXTRA_DIST = CMakeLists.txt *reference.vtu *.input grids/*.dgf CMakeLists.txt co2values.inc
+EXTRA_DIST = CMakeLists.txt *reference.vtu *.input grids/*.dgf co2values.inc
 
 test_co2_SOURCES = test_co2.cc
 
diff --git a/test/boxmodels/co2ni/Makefile.am b/test/boxmodels/co2ni/Makefile.am
index c9eb51dbfa82ac37403648282a05acefd1d3d91b..22493160fd9963754b6a07412037225daee21fbc 100644
--- a/test/boxmodels/co2ni/Makefile.am
+++ b/test/boxmodels/co2ni/Makefile.am
@@ -1,7 +1,7 @@
 check_PROGRAMS = test_co2ni
 
 noinst_HEADERS = *.hh
-EXTRA_DIST = CMakeLists.txt *reference.vtu *.input grids/*.dgf CMakeLists.txt co2values.inc
+EXTRA_DIST = CMakeLists.txt *reference.vtu *.input grids/*.dgf co2values.inc
 
 test_co2ni_SOURCES = test_co2ni.cc