diff --git a/crypto/src/util/io/Streams.cs b/crypto/src/util/io/Streams.cs
index 01f5ee75b..e0acb5955 100644
--- a/crypto/src/util/io/Streams.cs
+++ b/crypto/src/util/io/Streams.cs
@@ -134,6 +134,7 @@ public static byte[] ReadAll(Stream inStr)
 			return buf.ToArray();
 		}
 
+        [Obsolete("Will be removed")]
         public static byte[] ReadAll(MemoryStream inStr)
         {
 			return inStr.ToArray();