diff --git a/Upsilon/BaseTypes/ScriptBoolean.cs b/Upsilon/BaseTypes/ScriptBoolean.cs
index ecce633..14388f0 100644
--- a/Upsilon/BaseTypes/ScriptBoolean.cs
+++ b/Upsilon/BaseTypes/ScriptBoolean.cs
@@ -39,5 +39,19 @@ namespace Upsilon.BaseTypes
         {
             return Value.ToString();
         }
+
+        protected bool Equals(ScriptBoolean other)
+        {
+            return other.Value == Value;
+        }
+
+        public override bool Equals(object obj)
+        {
+            if (ReferenceEquals(null, obj)) return false;
+            if (ReferenceEquals(this, obj)) return true;
+            if (obj.GetType() != this.GetType()) return false;
+            return Equals((ScriptBoolean) obj);
+        }
+
     }
 }
\ No newline at end of file
diff --git a/Upsilon/BaseTypes/ScriptNull.cs b/Upsilon/BaseTypes/ScriptNull.cs
index ef7dcfb..37e8014 100644
--- a/Upsilon/BaseTypes/ScriptNull.cs
+++ b/Upsilon/BaseTypes/ScriptNull.cs
@@ -2,6 +2,7 @@ namespace Upsilon.BaseTypes
 {
     internal class ScriptNull : ScriptType
     {
+
         public override Type Type => Type.Nil;
         public override object ToCSharpObject()
         {
@@ -17,5 +18,18 @@ namespace Upsilon.BaseTypes
         {
             return "null";
         }
+
+        protected bool Equals(ScriptNull other)
+        {
+            return true;
+        }
+
+        public override bool Equals(object obj)
+        {
+            if (ReferenceEquals(null, obj)) return false;
+            if (ReferenceEquals(this, obj)) return true;
+            if (obj.GetType() != this.GetType()) return false;
+            return Equals((ScriptNull) obj);
+        }
     }
 }
\ No newline at end of file
diff --git a/Upsilon/BaseTypes/UserData/DictionaryUserData.cs b/Upsilon/BaseTypes/UserData/DictionaryUserData.cs
index 03900c7..c7ec453 100644
--- a/Upsilon/BaseTypes/UserData/DictionaryUserData.cs
+++ b/Upsilon/BaseTypes/UserData/DictionaryUserData.cs
@@ -55,5 +55,19 @@ namespace Upsilon.BaseTypes.UserData
         {
             return new ScriptNumberLong(Dictionary.Count);
         }
+
+        protected bool Equals(DictionaryUserData other)
+        {
+            return Dictionary.Equals(other.Dictionary);
+        }
+
+        public override bool Equals(object obj)
+        {
+            if (ReferenceEquals(null, obj)) return false;
+            if (ReferenceEquals(this, obj)) return true;
+            if (obj.GetType() != this.GetType()) return false;
+            return Equals((DictionaryUserData) obj);
+        }
+
     }
 }
\ No newline at end of file
diff --git a/Upsilon/BaseTypes/UserData/GenericUserData.cs b/Upsilon/BaseTypes/UserData/GenericUserData.cs
index ce943d3..7bea836 100644
--- a/Upsilon/BaseTypes/UserData/GenericUserData.cs
+++ b/Upsilon/BaseTypes/UserData/GenericUserData.cs
@@ -55,5 +55,19 @@ namespace Upsilon.BaseTypes.UserData
         {
             return _typeInfo.UnaryOperator(Value, par1, op);
         }
+
+        protected bool Equals(GenericUserData other)
+        {
+            return Value.Equals(other.Value);
+        }
+
+        public override bool Equals(object obj)
+        {
+            if (ReferenceEquals(null, obj)) return false;
+            if (ReferenceEquals(this, obj)) return true;
+            if (obj.GetType() != this.GetType()) return false;
+            return Equals((GenericUserData) obj);
+        }
+
     }
 }
\ No newline at end of file
diff --git a/Upsilon/BaseTypes/UserData/ListUserData.cs b/Upsilon/BaseTypes/UserData/ListUserData.cs
index 5018e36..3db4bd5 100644
--- a/Upsilon/BaseTypes/UserData/ListUserData.cs
+++ b/Upsilon/BaseTypes/UserData/ListUserData.cs
@@ -71,5 +71,19 @@ namespace Upsilon.BaseTypes.UserData
         {
             return new ScriptNumberLong(List.Count);
         }
+
+        protected bool Equals(ListUserData other)
+        {
+            return List.Equals(other.List);
+        }
+
+        public override bool Equals(object obj)
+        {
+            if (ReferenceEquals(null, obj)) return false;
+            if (ReferenceEquals(this, obj)) return true;
+            if (obj.GetType() != this.GetType()) return false;
+            return Equals((ListUserData) obj);
+        }
+
     }
 }
\ No newline at end of file
diff --git a/Upsilon/Evaluator/Evaluator.cs b/Upsilon/Evaluator/Evaluator.cs
index c5158f5..0ae9d62 100644
--- a/Upsilon/Evaluator/Evaluator.cs
+++ b/Upsilon/Evaluator/Evaluator.cs
@@ -382,9 +382,9 @@ namespace Upsilon.Evaluator
                     }
                     goto default;
                 case BoundBinaryOperator.OperatorKind.Equality:
-                    return new ScriptBoolean(Equals(left, right));
+                    return new ScriptBoolean(left.Equals(right));
                 case BoundBinaryOperator.OperatorKind.Inequality:
-                    return new ScriptBoolean(!Equals(left, right));
+                    return new ScriptBoolean(!left.Equals(right));
                 case BoundBinaryOperator.OperatorKind.Less:
                     if (left.Type == Type.Number && right.Type == Type.Number)
                     {