diff --git a/test/libunwind/test/config.py b/test/libunwind/test/config.py
index 977f9a0..183c48f 100644
--- a/test/libunwind/test/config.py
+++ b/test/libunwind/test/config.py
@@ -49,8 +49,6 @@
         super(Configuration, self).configure_compile_flags()
 
     def configure_compile_flags_header_includes(self):
-        self.configure_config_site_header()
-
         libunwind_headers = self.get_lit_conf(
             'libunwind_headers',
             os.path.join(self.libunwind_src_root, 'include'))