diff --git a/caddytls/setup.go b/caddytls/setup.go
index e76732385..02a694bd8 100644
--- a/caddytls/setup.go
+++ b/caddytls/setup.go
@@ -445,5 +445,3 @@ func loadCertsInDir(cfg *Config, c *caddy.Controller, dir string) error {
 func constructDefaultClusterPlugin() (certmagic.Storage, error) {
 	return &certmagic.FileStorage{Path: caddy.AssetsPath()}, nil
 }
-
-var clusterPluginSetup int32 // access atomically