diff --git a/phosphor-regulators/test/meson.build b/phosphor-regulators/test/meson.build
index 0e32ad7..c89e689 100644
--- a/phosphor-regulators/test/meson.build
+++ b/phosphor-regulators/test/meson.build
@@ -1,6 +1,7 @@
 test('phosphor-regulators-tests',
      executable('phosphor-regulators-tests',
                 'device_tests.cpp',
+                'id_map_tests.cpp',
                 'rail_tests.cpp',
                 'rule_tests.cpp',
                 dependencies: [