diff --git a/Upsilon/BaseTypes/Number/NumberLong.cs b/Upsilon/BaseTypes/Number/NumberLong.cs
index 01a5364..e41686b 100644
--- a/Upsilon/BaseTypes/Number/NumberLong.cs
+++ b/Upsilon/BaseTypes/Number/NumberLong.cs
@@ -5,7 +5,7 @@ namespace Upsilon.BaseTypes.Number
     public class NumberLong : Number
     {
         public long Value { get; }
-        protected override bool IsFloat { get; } = true;
+        protected override bool IsFloat { get; } = false;
 
         public NumberLong(long val)
         {
diff --git a/Upsilon/Binder/Binder.cs b/Upsilon/Binder/Binder.cs
index f6dd792..76900c4 100644
--- a/Upsilon/Binder/Binder.cs
+++ b/Upsilon/Binder/Binder.cs
@@ -70,9 +70,13 @@ namespace Upsilon.Binder
             switch (value)
             {
                 case double d:
-                    type = Type.Number;
+                    type     = Type.Number;
                     outValue = new NumberDouble(d);
                     break;
+                case long l:
+                    type     = Type.Number;
+                    outValue = new NumberLong(l);
+                    break;
                 case bool b:
                     type = Type.Boolean;
                     outValue = value;
diff --git a/Upsilon/Parser/Lexer.cs b/Upsilon/Parser/Lexer.cs
index 1bdc677..0741aa7 100644
--- a/Upsilon/Parser/Lexer.cs
+++ b/Upsilon/Parser/Lexer.cs
@@ -124,8 +124,13 @@ namespace Upsilon.Parser
                 numStr.Append(Next);
                 _position++;
             }
-            var i = double.Parse(numStr.ToString());
-            return new SyntaxToken(SyntaxKind.Number, start, numStr.ToString(), i);
+
+            object o;
+            if (hasDecimalPoint)
+                o = double.Parse(numStr.ToString());
+            else
+                o = long.Parse(numStr.ToString());
+            return new SyntaxToken(SyntaxKind.Number, start, numStr.ToString(), o);
         }
 
         private SyntaxToken LexIdentifierOrKeyword()