diff --git a/CMake/CopyDllForTarget.cmake b/CMake/CopyDllForTarget.cmake
index f240b6d00ee95e20c2292bbc542cd60ca664af2d..e95e8d4bd7f7bfcf87fbc80fed41e8ef344e58e1 100644
--- a/CMake/CopyDllForTarget.cmake
+++ b/CMake/CopyDllForTarget.cmake
@@ -34,12 +34,12 @@ function(copyDllForTarget target)
       foreach(file ${runtime_release})
         add_custom_command(TARGET ${target}
           POST_BUILD
-          COMMAND ${CMAKE_COMMAND} -E copy_if_different $<$<NOT:$<CONFIG:Debug>>:${file}> ${PROJECT_SOURCE_DIR}/README.md $<TARGET_FILE_DIR:${target}>)
+          COMMAND ${CMAKE_COMMAND} -E copy_if_different $<$<NOT:$<CONFIG:Debug>>:${file}> ${CMAKE_SOURCE_DIR}/README.md $<TARGET_FILE_DIR:${target}>)
       endforeach()
       foreach(file ${runtime_debug})
         add_custom_command(TARGET ${target}
           POST_BUILD
-          COMMAND ${CMAKE_COMMAND} -E copy_if_different $<$<CONFIG:Debug>:${file}> ${PROJECT_SOURCE_DIR}/README.md $<TARGET_FILE_DIR:${target}>)
+          COMMAND ${CMAKE_COMMAND} -E copy_if_different $<$<CONFIG:Debug>:${file}> ${CMAKE_SOURCE_DIR}/README.md $<TARGET_FILE_DIR:${target}>)
       endforeach()
     endif()
 endfunction()