diff --git a/Meta/CMake/utils.cmake b/Meta/CMake/utils.cmake
index dd4e51869b..942f327ddc 100644
--- a/Meta/CMake/utils.cmake
+++ b/Meta/CMake/utils.cmake
@@ -77,8 +77,7 @@ function(serenity_test test_src sub_dir)
     cmake_parse_arguments(SERENITY_TEST "MAIN_ALREADY_DEFINED" "CUSTOM_MAIN" "LIBS" ${ARGN})
     set(TEST_SOURCES ${test_src})
     if ("${SERENITY_TEST_CUSTOM_MAIN}" STREQUAL "")
-        set(SERENITY_TEST_CUSTOM_MAIN
-            "${CMAKE_SOURCE_DIR}/Userland/Libraries/LibTest/TestMain.cpp")
+        set(SERENITY_TEST_CUSTOM_MAIN "$<TARGET_OBJECTS:LibTestMain>")
     endif()
     if (NOT ${SERENITY_TEST_MAIN_ALREADY_DEFINED})
         list(PREPEND TEST_SOURCES "${SERENITY_TEST_CUSTOM_MAIN}")
@@ -98,8 +97,7 @@ endfunction()
 function(serenity_testjs_test test_src sub_dir)
     cmake_parse_arguments(SERENITY_TEST "" "CUSTOM_MAIN" "LIBS" ${ARGN})
     if ("${SERENITY_TEST_CUSTOM_MAIN}" STREQUAL "")
-        set(SERENITY_TEST_CUSTOM_MAIN
-            "${CMAKE_SOURCE_DIR}/Userland/Libraries/LibTest/JavaScriptTestRunnerMain.cpp")
+        set(SERENITY_TEST_CUSTOM_MAIN "$<TARGET_OBJECTS:JavaScriptTestRunnerMain>")
     endif()
     list(APPEND SERENITY_TEST_LIBS LibJS LibCore)
     serenity_test(${test_src} ${sub_dir}
diff --git a/Userland/Libraries/LibTest/CMakeLists.txt b/Userland/Libraries/LibTest/CMakeLists.txt
index ad5f2bb251..c5ba722218 100644
--- a/Userland/Libraries/LibTest/CMakeLists.txt
+++ b/Userland/Libraries/LibTest/CMakeLists.txt
@@ -7,3 +7,6 @@ set(SOURCES
 
 serenity_lib(LibTest test)
 target_link_libraries(LibTest LibC)
+
+add_library(LibTestMain OBJECT TestMain.cpp)
+add_library(JavaScriptTestRunnerMain OBJECT JavaScriptTestRunnerMain.cpp)