diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index b5a66dd..fb344dc 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -4,7 +4,7 @@ file(GLOB core_sources "*.cpp")
 
 find_package(GTest)
 
-INCLUDE_DIRECTORIES(
+include_directories(
 	${GTEST_INCLUDE_DIRS}
 	${Boost_INCLUDE_DIRS}
 	${PROJECT_SOURCE_DIR}/include