diff --git a/guile/tests/meson.build b/guile/tests/meson.build
index a9c63524..2e3ab9d0 100644
--- a/guile/tests/meson.build
+++ b/guile/tests/meson.build
@@ -21,6 +21,7 @@
 if get_option('b_sanitize') == 'none'
   guile_load_path=':'.join([
     join_paths(meson.project_source_root(), 'guile'),
+    join_paths(meson.project_build_root(), 'guile'),
     meson.current_build_dir()])
 
   test('test-mu-guile',