diff --git a/models/peer/peer_cache.go b/models/peer/peer_cache.go
index 516ab20..1cbb84c 100644
--- a/models/peer/peer_cache.go
+++ b/models/peer/peer_cache.go
@@ -32,14 +32,19 @@ type PeerCache struct {
 func (p *PeerCache) urlFormat(url string, dt tools.DataType) string {
 	// localhost is replaced by the local peer URL
 	// because localhost must collide on a web request security protocol
-	if strings.Contains(url, "localhost") || strings.Contains(url, "127.0.0.1") {
-		r := regexp.MustCompile("(:[0-9]+)")
+	localhost := ""
+	if strings.Contains(url, "localhost") {
+		localhost = "localhost"
+	}
+	if strings.Contains(url, "127.0.0.1") {
+		localhost = "127.0.0.1"
+	}
+	if localhost != "" {
+		r := regexp.MustCompile("(" + localhost + ":[0-9]+)")
 		t := r.FindString(url)
 		if t != "" {
-			url = strings.Replace(url, t, "", -1)
+			url = strings.Replace(url, t, dt.API()+":8080", -1)
 		}
-		url = strings.ReplaceAll(url, "localhost", dt.API()+":8080")
-		url = strings.ReplaceAll(url, "127.0.0.1", dt.API()+":8080")
 	} else {
 		url = url + "/" + dt.API()
 	}