diff --git a/model/tests/CMakeLists.txt b/model/tests/CMakeLists.txt
index afb02847f..69445bfb7 100644
--- a/model/tests/CMakeLists.txt
+++ b/model/tests/CMakeLists.txt
@@ -29,18 +29,6 @@ function(unit_test name)
   add_test(NAME ${name} COMMAND ${name})
 endfunction()
 
-# add_custom_command(
-#   OUTPUT mod_def.ww3
-#   COMMAND ./bin/ww3_grid
-#   COMMENT "Generating the mod_def.ww3 file"
-#   VERBATIM
-# )
-
-# add_custom_target(
-#   BuildModDef ALL
-#   DEPENDS mod_def.ww3
-#   )
-
 # Copy test data files that are in the repo to the build directory.
 copy_test_data(switch.io)
 copy_test_data_2(ww3_grid.inp ww3_grid.inp)