diff --git a/CMakeLists.txt b/CMakeLists.txt
index d781dfe..4763b9f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -17,7 +17,7 @@ SET(SRCS
 )
 
 ADD_DEFINITIONS("-DDEBUG=1")
-INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/include)
+INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR}/include)
 SET(DEPENDENTS "libcurl json-c")
 INCLUDE(FindPkgConfig)
 pkg_check_modules(PKGS REQUIRED ${DEPENDENTS})