diff --git a/meson.build b/meson.build
index d87b837..be2a2ba 100644
--- a/meson.build
+++ b/meson.build
@@ -144,6 +144,7 @@
 )
 
 executable('phosphor-systemd-target-monitor',
+            'systemd_service_parser.cpp',
             'systemd_target_monitor.cpp',
             'systemd_target_parser.cpp',
             'systemd_target_signal.cpp',