diff --git a/Microsoft.Azure.Amqp/Amqp/Encoding/EncodingCache.cs b/Microsoft.Azure.Amqp/Amqp/Encoding/EncodingCache.cs
index ba41cf20..b7c38151 100644
--- a/Microsoft.Azure.Amqp/Amqp/Encoding/EncodingCache.cs
+++ b/Microsoft.Azure.Amqp/Amqp/Encoding/EncodingCache.cs
@@ -21,7 +21,7 @@ static class EncodingCache
             capacity: 43,
             comparer: ByteArrayComparer.Instance,
             keyFunc: a => Copy(a),
-            valueFunc: a => System.Text.Encoding.ASCII.GetString(a.Array, a.Offset, a.Count));
+            valueFunc: a => SystemEncoding.ASCII.GetString(a.Array, a.Offset, a.Count));
 
         static readonly UlongCache performativeCodes = new UlongCache(0x10ul, 0x19ul);
         static readonly UlongCache outcomeCodes = new UlongCache(0x23ul, 0x29ul);