diff --git a/Upsilon/BaseTypes/Boolean.cs b/Upsilon/BaseTypes/LuaBoolean.cs
similarity index 52%
rename from Upsilon/BaseTypes/Boolean.cs
rename to Upsilon/BaseTypes/LuaBoolean.cs
index 11fdd60..d9bd3a6 100644
--- a/Upsilon/BaseTypes/Boolean.cs
+++ b/Upsilon/BaseTypes/LuaBoolean.cs
@@ -1,8 +1,8 @@
 namespace Upsilon.BaseTypes
 {
-    public class Boolean : LuaType
+    public class LuaBoolean : LuaType
     {
-        public Boolean(bool value)
+        public LuaBoolean(bool value)
         {
             Value = value;
         }
@@ -10,19 +10,19 @@ namespace Upsilon.BaseTypes
         public override Type Type => Type.Boolean;
         public bool Value { get; }
 
-        public static implicit operator bool(Boolean b)
+        public static implicit operator bool(LuaBoolean b)
         {
             return b.Value;
         }
 
-        public static implicit operator Boolean(bool b)
+        public static implicit operator LuaBoolean(bool b)
         {
-            return new Boolean(b);
+            return new LuaBoolean(b);
         }
 
-        public static Boolean operator ! (Boolean n)
+        public static LuaBoolean operator ! (LuaBoolean n)
         {
-            return new Boolean(!n.Value);
+            return new LuaBoolean(!n.Value);
         }
 
         public override string ToString()
diff --git a/Upsilon/Binder/Binder.cs b/Upsilon/Binder/Binder.cs
index 36d72ef..27dcc97 100644
--- a/Upsilon/Binder/Binder.cs
+++ b/Upsilon/Binder/Binder.cs
@@ -3,7 +3,6 @@ using System.Collections.Immutable;
 using Upsilon.BaseTypes;
 using Upsilon.BaseTypes.Number;
 using Upsilon.Parser;
-using Boolean = Upsilon.BaseTypes.Boolean;
 using Type = Upsilon.BaseTypes.Type;
 
 namespace Upsilon.Binder
@@ -109,7 +108,7 @@ namespace Upsilon.Binder
                     break;
                 case bool b:
                     type = Type.Boolean;
-                    outValue = new Boolean(b);
+                    outValue = new LuaBoolean(b);
                     break;
                 default:
                     _diagnostics.LogUnknownType(e.Span);
diff --git a/Upsilon/Evaluator/Evaluator.cs b/Upsilon/Evaluator/Evaluator.cs
index d55fe2d..8b44294 100644
--- a/Upsilon/Evaluator/Evaluator.cs
+++ b/Upsilon/Evaluator/Evaluator.cs
@@ -3,7 +3,6 @@ using System.Collections.Generic;
 using Upsilon.BaseTypes;
 using Upsilon.BaseTypes.Number;
 using Upsilon.Binder;
-using Boolean = Upsilon.BaseTypes.Boolean;
 
 namespace Upsilon.Evaluator
 {
@@ -84,7 +83,7 @@ namespace Upsilon.Evaluator
                 case BoundUnaryOperator.OperatorKind.Negation:
                     return -((Number)operand);
                 case BoundUnaryOperator.OperatorKind.LogicalNegation:
-                    return !(Boolean) operand;
+                    return !(LuaBoolean) operand;
                 default:
                     throw new Exception("Invalid Unary Operator: " + e.Operator.Kind);
             }
@@ -105,9 +104,9 @@ namespace Upsilon.Evaluator
                 case BoundBinaryOperator.OperatorKind.Division:
                     return ((Number)left) / ((Number)right);
                 case BoundBinaryOperator.OperatorKind.Equality:
-                    return new Boolean(Equals(left, right));
+                    return new LuaBoolean(Equals(left, right));
                 case BoundBinaryOperator.OperatorKind.Inequality:
-                    return new Boolean(!Equals(left, right));
+                    return new LuaBoolean(!Equals(left, right));
                 default:
                     throw new Exception("Invalid Binary Operator: " + e.Operator);
             }
@@ -136,7 +135,7 @@ namespace Upsilon.Evaluator
         private void EvaluateBoundIfStatement(BoundIfStatement boundBlockStatement)
         {
             var condition = EvaluateExpression(boundBlockStatement.Condition.Expression);
-            if ((Boolean) condition)
+            if ((LuaBoolean) condition)
             {
                 EvaluateBoundBlockStatement(boundBlockStatement.Block);
             }
diff --git a/UpsilonCompiler/Compiler.cs b/UpsilonCompiler/Compiler.cs
index b6f32fb..73f2b5f 100644
--- a/UpsilonCompiler/Compiler.cs
+++ b/UpsilonCompiler/Compiler.cs
@@ -1,8 +1,8 @@
 using System;
 using System.Text;
+using Upsilon.BaseTypes;
 using Upsilon.BaseTypes.Number;
 using Upsilon.Binder;
-using Boolean = Upsilon.BaseTypes.Boolean;
 using Type = Upsilon.BaseTypes.Type;
 
 namespace UpsilonCompiler
@@ -60,7 +60,7 @@ namespace UpsilonCompiler
                 case Type.Nil:
                     return "null";
                 case Type.Boolean:
-                    return ((Boolean)e.Value) ? "true" : "false";
+                    return ((LuaBoolean)e.Value) ? "true" : "false";
                 case Type.Number:
                     return ((Number) e.Value).ToString();
                 case Type.String:
diff --git a/UpsilonTests/IfTests.cs b/UpsilonTests/IfTests.cs
index a5b9f93..c093a66 100644
--- a/UpsilonTests/IfTests.cs
+++ b/UpsilonTests/IfTests.cs
@@ -13,7 +13,7 @@ namespace UpsilonTests
             var input  = "if true then val = true end";
             var script = new Script(input);
             Assert.Empty(script.Diagnostics.Messages);
-            var actual = script.Evaluate<Boolean>();
+            var actual = script.Evaluate<LuaBoolean>();
             Assert.True(actual);
         }