diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 7f9a7a8..2783f69 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -31,6 +31,7 @@ enable_testing()
 foreach(name IN ITEMS test_main test_parser test_converter test_extractions)
   add_executable("${name}" "${name}.cpp")
   target_link_libraries("${name}" PRIVATE ssp::ssp doctest::doctest)
-  target_compile_definitions("${name}" PRIVATE CMAKE_GITHUB_CI)
+  target_compile_definitions("${name}" PRIVATE \
+    DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN CMAKE_GITHUB_CI)
   doctest_discover_tests("${name}")
 endforeach()