diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4516e67..5eb4bd8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -37,11 +37,14 @@ set(CMAKE_CXX_FLAGS "-Wall -Werror -Wpedantic")
 # #######################################
 
 # find_library()
-
+set(CPPUTEST_DIR "./cpputest/include")
 
 if (UNIT_TESTING)
-    message(STATUS "CPPUTEST_LIB: ${CPPUTEST_LIB}")
-    add_subdirectory(cpputest)
+    include_directories(
+        ${CPPUTEST_DIR}/CppUTest
+        ${CPPUTEST_DIR}/CppUTestExt
+        )
+    message(STATUS "CPPUTEST_DIR: ${CPPUTEST_DIR}")
     add_subdirectory(tests)
 endif()