diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index c73f75a..a2ef9c9 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -31,5 +31,6 @@ enable_testing()
 foreach(name IN ITEMS 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 DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN)
   doctest_discover_tests("${name}")
 endforeach()
diff --git a/test/test_converter.cpp b/test/test_converter.cpp
index 82dc020..96a4f8d 100644
--- a/test/test_converter.cpp
+++ b/test/test_converter.cpp
@@ -1,4 +1,3 @@
-#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
 #include "../include/ss/converter.hpp"
 #include "doctest.h"
 #include <algorithm>
diff --git a/test/test_extractions.cpp b/test/test_extractions.cpp
index 813861f..1d3612e 100644
--- a/test/test_extractions.cpp
+++ b/test/test_extractions.cpp
@@ -1,4 +1,3 @@
-#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
 #include "../include/ss/extract.hpp"
 #include "doctest.h"
 #include <algorithm>
diff --git a/test/test_parser.cpp b/test/test_parser.cpp
index 4f87622..b705078 100644
--- a/test/test_parser.cpp
+++ b/test/test_parser.cpp
@@ -1,4 +1,3 @@
-#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
 #include "../include/ss/parser.hpp"
 #include "doctest.h"
 #include <algorithm>