diff --git a/src/nm-sleep-monitor-systemd.c b/src/nm-sleep-monitor-systemd.c
index 18e599ed67..55134c486d 100644
--- a/src/nm-sleep-monitor-systemd.c
+++ b/src/nm-sleep-monitor-systemd.c
@@ -23,6 +23,7 @@
 #include <sys/stat.h>
 #include <dbus/dbus-glib-lowlevel.h>
 #include <dbus/dbus-glib.h>
+#include <glib/gi18n.h>
 #include <gio/gio.h>
 #include <gio/gunixfdlist.h>