diff --git a/Assets/Cryville/Crtr/Ruleset.cs b/Assets/Cryville/Crtr/Ruleset.cs
index 73adf81..725c915 100644
--- a/Assets/Cryville/Crtr/Ruleset.cs
+++ b/Assets/Cryville/Crtr/Ruleset.cs
@@ -15,9 +15,8 @@ namespace Cryville.Crtr {
 		[JsonRequired]
 		public long format;
 		
-		[JsonRequired]
 		public string @base;
-		
+
 		[JsonIgnore]
 		public PdtRuleset Root { get; private set; }