diff --git a/pyrad/packet.py b/pyrad/packet.py
index e3682b2..2f74305 100644
--- a/pyrad/packet.py
+++ b/pyrad/packet.py
@@ -111,6 +111,8 @@ def _DecodeValue(self, attr, value):
         if attr.values.HasBackward(value):
             return attr.values.GetBackward(value)
         else:
+            if attr.encrypt:
+                return tools.DecodeAttr('octets', value)
             return tools.DecodeAttr(attr.type, value)
 
     def _EncodeValue(self, attr, value):