diff --git a/src/ReC.Domain/Constants/RestType.cs b/src/ReC.Domain/Constants/RestType.cs
index 0cea436..da43057 100644
--- a/src/ReC.Domain/Constants/RestType.cs
+++ b/src/ReC.Domain/Constants/RestType.cs
@@ -1,6 +1,6 @@
 namespace ReC.Domain.Constants;
 
-public enum RestType
+public enum RestType : byte
 {
     None = 0,
     Get = 1,
@@ -12,7 +12,6 @@ public enum RestType
     Options = 7,
     Connect = 8,
     Trace = 9,
-    Invalid = -1,
 }
 
 public static class RestTypeExtensions
@@ -24,6 +23,6 @@ public static class RestTypeExtensions
 
     public static bool IsValid(this RestType restType)
     {
-        return restType != RestType.Invalid && restType != RestType.None;
+        return restType != RestType.None;
     }
 }
\ No newline at end of file