diff --git a/CMakeLists.txt b/CMakeLists.txt
index dcf2dd9..73fae51 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,13 +7,13 @@ option(BUILD_STD "Build the BLT standard utilities." ON)
 option(BUILD_PROFILING "Build the BLT profiler extension" ON)
 
 if(${BUILD_STD})
-    file(GLOB_RECURSE STD_FILES "${CMAKE_SOURCE_DIR}/src/blt/std/*.cpp")
+    file(GLOB_RECURSE STD_FILES "${CMAKE_CURRENT_SOURCE_DIR}/src/blt/std/*.cpp")
 else()
     set(STD_FILES "")
 endif()
 
 if(${BUILD_PROFILING})
-    file(GLOB_RECURSE PROFILING_FILES "${CMAKE_SOURCE_DIR}/src/blt/profiling/*.cpp")
+    file(GLOB_RECURSE PROFILING_FILES "${CMAKE_CURRENT_SOURCE_DIR}/src/blt/profiling/*.cpp")
 else()
     set(PROFILING_FILES "")
 endif()