diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c
index 8e0bc1c077..1a654d8817 100644
--- a/src/nspawn/nspawn.c
+++ b/src/nspawn/nspawn.c
@@ -3563,7 +3563,7 @@ static int inner_child(
 
 static int setup_notify_child(void) {
         _cleanup_close_ int fd = -1;
-        union sockaddr_union sa = {
+        static const union sockaddr_union sa = {
                 .un.sun_family = AF_UNIX,
                 .un.sun_path = NSPAWN_NOTIFY_SOCKET_PATH,
         };