diff --git a/CMakeLists.txt b/CMakeLists.txt
index 94df9dc..606508a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,6 +16,8 @@ include(Assertion)
 if(ASSERTION_ENABLE_TESTS)
   enable_testing()
 
+  list(APPEND CMAKE_SCRIPT_TEST_DEFINITIONS CMAKE_MODULE_PATH)
+
   add_cmake_script_test(test/test_add_test.cmake)
   add_cmake_script_test(test/test_assert_call.cmake)
   add_cmake_script_test(test/test_assert_number.cmake)
diff --git a/test/test_add_test.cmake b/test/test_add_test.cmake
index 12e4e13..6f48084 100644
--- a/test/test_add_test.cmake
+++ b/test/test_add_test.cmake
@@ -1,7 +1,6 @@
 cmake_minimum_required(VERSION 3.24)
 
-include(${CMAKE_CURRENT_LIST_DIR}/../cmake/Assertion.cmake
-  RESULT_VARIABLE ASSERTION_LIST_FILE)
+include(Assertion RESULT_VARIABLE ASSERTION_LIST_FILE)
 
 set(CMAKELISTS_HEADER
   "cmake_minimum_required(VERSION 3.24)\n"
diff --git a/test/test_assert.cmake b/test/test_assert.cmake
index 2c456a9..00eaac9 100644
--- a/test/test_assert.cmake
+++ b/test/test_assert.cmake
@@ -1,7 +1,6 @@
 cmake_minimum_required(VERSION 3.24)
 
-include(${CMAKE_CURRENT_LIST_DIR}/../cmake/Assertion.cmake
-  RESULT_VARIABLE ASSERTION_LIST_FILE)
+include(Assertion RESULT_VARIABLE ASSERTION_LIST_FILE)
 
 file(MAKE_DIRECTORY sample-project)
 
diff --git a/test/test_assert_call.cmake b/test/test_assert_call.cmake
index a96cd85..c8bc8b9 100644
--- a/test/test_assert_call.cmake
+++ b/test/test_assert_call.cmake
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.24)
 
-include(${CMAKE_CURRENT_LIST_DIR}/../cmake/Assertion.cmake)
+include(Assertion)
 
 function(throw_errors)
   message(SEND_ERROR "a send error message")
diff --git a/test/test_assert_number.cmake b/test/test_assert_number.cmake
index 34389ca..5133df6 100644
--- a/test/test_assert_number.cmake
+++ b/test/test_assert_number.cmake
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.24)
 
-include(${CMAKE_CURRENT_LIST_DIR}/../cmake/Assertion.cmake)
+include(Assertion)
 
 set(SEVEN_VAR 7)
 set(THIRTEEN_VAR 13)
diff --git a/test/test_assert_process.cmake b/test/test_assert_process.cmake
index 02114de..0e9a951 100644
--- a/test/test_assert_process.cmake
+++ b/test/test_assert_process.cmake
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.24)
 
-include(${CMAKE_CURRENT_LIST_DIR}/../cmake/Assertion.cmake)
+include(Assertion)
 
 section("assert process executions")
   section("it should assert process executions")
diff --git a/test/test_assert_string.cmake b/test/test_assert_string.cmake
index bae9047..9639523 100644
--- a/test/test_assert_string.cmake
+++ b/test/test_assert_string.cmake
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.24)
 
-include(${CMAKE_CURRENT_LIST_DIR}/../cmake/Assertion.cmake)
+include(Assertion)
 
 set(STRING_VAR "a string")
 set(OTHER_STRING_VAR "another string")
diff --git a/test/test_assert_version.cmake b/test/test_assert_version.cmake
index 6e6f12c..5db54c6 100644
--- a/test/test_assert_version.cmake
+++ b/test/test_assert_version.cmake
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.24)
 
-include(${CMAKE_CURRENT_LIST_DIR}/../cmake/Assertion.cmake)
+include(Assertion)
 
 set(VERSION_VAR 1.2.3)
 set(VERSIONN_VAR 1.02.3)
diff --git a/test/test_fail.cmake b/test/test_fail.cmake
index 05d272a..16932ee 100644
--- a/test/test_fail.cmake
+++ b/test/test_fail.cmake
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.24)
 
-include(${CMAKE_CURRENT_LIST_DIR}/../cmake/Assertion.cmake)
+include(Assertion)
 
 section("it should fail with formatted fatal error messages given strings")
   assert_call(fail "single line string"