diff --git a/Realtime/Realtime/Public/Signature/ILCIMSignatureFactory.cs b/Realtime/Realtime/Public/Signature/ILCIMSignatureFactory.cs
index a3b6127..3d9e76e 100644
--- a/Realtime/Realtime/Public/Signature/ILCIMSignatureFactory.cs
+++ b/Realtime/Realtime/Public/Signature/ILCIMSignatureFactory.cs
@@ -3,7 +3,7 @@ using System.Threading.Tasks;
 
 namespace LeanCloud.Realtime {
     /// <summary>
-    /// ILCIMSignatureFactory is an interface that creates the signature of realtime.
+    /// ILCIMSignatureFactory is an interface that creates a LCRealtime signature.
     /// </summary>
     public interface ILCIMSignatureFactory {
         Task<LCIMSignature> CreateConnectSignature(string clientId);