diff --git a/test/lit.site.cfg.in b/test/lit.site.cfg.in
index 14fabce..51b4631 100644
--- a/test/lit.site.cfg.in
+++ b/test/lit.site.cfg.in
@@ -29,6 +29,7 @@
 config.sysroot                  = "@LIBUNWIND_SYSROOT@"
 config.gcc_toolchain            = "@LIBUNWIND_GCC_TOOLCHAIN@"
 config.cxx_ext_threads          = @LIBUNWIND_BUILD_EXTERNAL_THREAD_LIBRARY@
+config.enable_experimental      = False
 
 site.addsitedir(os.path.join(config.libunwind_src_root, 'test'))
 site.addsitedir(os.path.join(config.libcxx_src_root, 'utils'))