cmake fix

CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b118dd8..189562b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@
 
 CMAKE_MINIMUM_REQUIRED(VERSION 2.4)
 
-set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
+set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
 
 OPTION(BUILD_TESTS "Build tests" OFF)
 OPTION(BUILD_DOC "Build documentation and examples" OFF)
@@ -49,5 +49,5 @@
 ADD_SUBDIRECTORY(demos)
 
 IF(BUILD_BTL)
-ADD_SUBDIRECTORY(bench/btl)
+  ADD_SUBDIRECTORY(bench/btl)
 ENDIF(BUILD_BTL)