diff --git a/nc_cxx.cmake b/nc_cxx.cmake
index b41d1a7..f91b481 100644
--- a/nc_cxx.cmake
+++ b/nc_cxx.cmake
@@ -47,7 +47,7 @@ if (NOT DEFINED __nc_cxx_stdcxxfs)
             try_compile(
                 __nc_cxx_stdcxxfs ${CMAKE_CURRENT_BINARY_DIR}
             SOURCES
-                ${CMAKE_CURRENT_SOURCE_DIR}/cmake/nc_cxx_stdcxxfs.cpp
+                ${NC_CMAKE_BASE}/nc_cxx_stdcxxfs.cpp
             LINK_LIBRARIES
                 ${lib})