diff --git a/conn.go b/conn.go
index bbed31f9..97377ece 100644
--- a/conn.go
+++ b/conn.go
@@ -17,7 +17,6 @@ import (
 	"fmt"
 	"io"
 	"net"
-	"strconv"
 	"strings"
 	"sync"
 	"sync/atomic"
@@ -180,15 +179,7 @@ func Connect(servers []string, sessionTimeout time.Duration, options ...connOpti
 		return nil, nil, errors.New("zk: server list must not be empty")
 	}
 
-	srvs := make([]string, len(servers))
-
-	for i, addr := range servers {
-		if strings.Contains(addr, ":") {
-			srvs[i] = addr
-		} else {
-			srvs[i] = addr + ":" + strconv.Itoa(DefaultPort)
-		}
-	}
+	srvs := FormatServers(servers)
 
 	// Randomize the order of the servers to avoid creating hotspots
 	stringShuffle(srvs)
diff --git a/util.go b/util.go
index f40a5b15..5a92b66b 100644
--- a/util.go
+++ b/util.go
@@ -38,12 +38,15 @@ func DigestACL(perms int32, user, password string) []ACL {
 // that resembles <addr>:<port>. If the server has no port provided, the
 // DefaultPort constant is added to the end.
 func FormatServers(servers []string) []string {
-	for i := range servers {
-		if !strings.Contains(servers[i], ":") {
-			servers[i] = servers[i] + ":" + strconv.Itoa(DefaultPort)
+	srvs := make([]string, len(servers))
+	for i, addr := range servers {
+		if strings.Contains(addr, ":") {
+			srvs[i] = addr
+		} else {
+			srvs[i] = addr + ":" + strconv.Itoa(DefaultPort)
 		}
 	}
-	return servers
+	return srvs
 }
 
 // stringShuffle performs a Fisher-Yates shuffle on a slice of strings