diff --git a/src/core/service.c b/src/core/service.c
index 67920248d3b..98b1599a32f 100644
--- a/src/core/service.c
+++ b/src/core/service.c
@@ -2651,6 +2651,9 @@ static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
         if (s->exec_context.var_tmp_dir)
                 unit_serialize_item(u, f, "var-tmp-dir", s->exec_context.var_tmp_dir);
 
+        if (s->forbid_restart)
+                unit_serialize_item(u, f, "forbid_restart", yes_no(s->forbid_restart));
+
         return 0;
 }
 
@@ -2787,6 +2790,14 @@ static int service_deserialize_item(Unit *u, const char *key, const char *value,
                         return log_oom();
 
                 s->exec_context.var_tmp_dir = t;
+        } else if (streq(key, "forbid_restart")) {
+                int b;
+
+                b = parse_boolean(value);
+                if (b < 0)
+                        log_debug_unit(u->id, "Failed to parse forbid_restart value %s", value);
+                else
+                        s->forbid_restart = b;
         } else
                 log_debug_unit(u->id, "Unknown serialization key '%s'", key);