diff --git a/doc/meson.build b/doc/meson.build
index 31c79ae..85bddaf 100644
--- a/doc/meson.build
+++ b/doc/meson.build
@@ -26,9 +26,9 @@ gnome.gtkdoc('calls',
            main_xml: 'calls-docs.xml',
             src_dir: [
                        join_paths(meson.source_root(), 'src'),
-                       join_paths(meson.build_root(), 'src'),
-                       join_paths(meson.build_root(), 'src/dbus'),
-                       join_paths(meson.build_root(), 'plugins/ofono/libgdbofono'),
+                       join_paths(meson.project_build_root(), 'src'),
+                       join_paths(meson.project_build_root(), 'src/dbus'),
+                       join_paths(meson.project_build_root(), 'plugins/ofono/libgdbofono'),
                      ],
        dependencies: calls_doc_deps,
           scan_args: [