diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7958925..80ea3a7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,7 +18,7 @@
 PROJECT(partitionmanager)
 
 CMAKE_MINIMUM_REQUIRED(VERSION 2.4.2)
-SET(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake/modules/")
+SET(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/modules/")
 
 SET(CMAKE_USE_RELATIVE_PATHS OFF)
 SET(CMAKE_BUILD_WITH_INSTALL_RPATH ON)