diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9566894..5e5d475 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,6 +9,8 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set (VERSION_MAJOR 1)
 set (VERSION_MINOR 0)
 
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+
 include(GNUInstallDirs)
 set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY
   ${CMAKE_BINARY_DIR}/${CMAKE_INSTALL_LIBDIR})