diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8f9f1822..6d310a2c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@
 cmake_minimum_required(VERSION 3.2)
 
 # Module path setup.
-set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake_modules" "${CMAKE_SOURCE_DIR}/cmake_modules/yacma")
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake_modules" "${CMAKE_CURRENT_SOURCE_DIR}/cmake_modules/yacma")
 
 # Set default build type to "Release".
 if(NOT CMAKE_BUILD_TYPE)