diff --git a/test/boxmodels/co2/CMakeLists.txt b/test/boxmodels/co2/CMakeLists.txt
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/test/boxmodels/co2/co2-ref.vtu b/test/boxmodels/co2/co2-reference.vtu
similarity index 100%
rename from test/boxmodels/co2/co2-ref.vtu
rename to test/boxmodels/co2/co2-reference.vtu
diff --git a/test/boxmodels/co2ni/CMakeLists.txt b/test/boxmodels/co2ni/CMakeLists.txt
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/test/boxmodels/co2ni/co2ni_ref.vtu b/test/boxmodels/co2ni/co2ni-reference.vtu
similarity index 100%
rename from test/boxmodels/co2ni/co2ni_ref.vtu
rename to test/boxmodels/co2ni/co2ni-reference.vtu