diff --git a/rpc/http.go b/rpc/http.go
index f4b99429ef..48cb22edee 100644
--- a/rpc/http.go
+++ b/rpc/http.go
@@ -27,6 +27,7 @@ import (
 	"mime"
 	"net/http"
 	"net/url"
+	"slices"
 	"strconv"
 	"sync"
 	"time"
@@ -351,10 +352,8 @@ func (s *Server) validateRequest(r *http.Request) (int, error) {
 	}
 	// Check content-type
 	if mt, _, err := mime.ParseMediaType(r.Header.Get("content-type")); err == nil {
-		for _, accepted := range acceptedContentTypes {
-			if accepted == mt {
-				return 0, nil
-			}
+		if slices.Contains(acceptedContentTypes, mt) {
+			return 0, nil
 		}
 	}
 	// Invalid content-type