diff --git a/middleware/prome/prometheus.go b/middleware/prome/prometheus.go
index 0343adc..d94ee2d 100644
--- a/middleware/prome/prometheus.go
+++ b/middleware/prome/prometheus.go
@@ -54,7 +54,7 @@ func recordUptime() {
 	}
 }
 
-func Prometheus(handler middleware.Handler) middleware.Middleware {
+func Prometheus() middleware.Middleware {
 	return func(handler middleware.Handler) middleware.Handler {
 		return func(ctx context.Context, a any) (any, error) {
 			tr, ok := transport.FromServerContext(ctx)