--- a/numpy/distutils/system_info.py
+++ b/numpy/distutils/system_info.py
@@ -403,7 +403,7 @@ def get_standard_file(fname):
         pass
     else:
         user_file = os.path.join(f, fname)
-        if os.path.isfile(user_file):
+        if "_PYTHON_HOST_PLATFORM" not in os.environ and os.path.isfile(user_file):
             filenames.append(user_file)
 
     # Local file
