diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index e843915..4d6a1f8 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -13,7 +13,7 @@ IF(NOT DEFINED MOCKCPP_ALLOW_MI)
   SET(MOCKCPP_ALLOW_MI TRUE)
 ENDIF(NOT DEFINED MOCKCPP_ALLOW_MI)
 
-SET(MOCKCPP_SRC_ROOT ${CMAKE_SOURCE_DIR})
+SET(MOCKCPP_SRC_ROOT ${CMAKE_CURRENT_SOURCE_DIR}/../)
 
 IF(NOT DEFINED MOCKCPP_XUNIT)
    SET(MOCKCPP_XUNIT STDEXCEPT)