diff --git a/JSONConverter.cs b/JSONConverter.cs
index 69a4047..7831493 100644
--- a/JSONConverter.cs
+++ b/JSONConverter.cs
@@ -12,12 +12,12 @@ namespace sharp.json
 
 		static Dictionary<Type, ConvertToDelegate> toDelegates = new Dictionary<Type, ConvertToDelegate>{
 			{ typeof(string), (t, json) => json.String },
-			{ typeof(int), (t, json) => json.Integer },
-			{ typeof(short), (t, json) => json.Integer },
+			{ typeof(int), (t, json) => (int)json.Integer },
+			{ typeof(short), (t, json) => (short)json.Integer },
 			{ typeof(long), (t, json) => json.Integer },
-			{ typeof(uint), (t, json) => json.Integer },
-			{ typeof(ushort), (t, json) => json.Integer },
-			{ typeof(ulong), (t, json) => json.Integer },
+			{ typeof(uint), (t, json) => (uint)json.Integer },
+			{ typeof(ushort), (t, json) => (ushort)json.Integer },
+			{ typeof(ulong), (t, json) => (ulong)json.Integer },
 			{ typeof(double), (t, json) => json.Double },
 			{ typeof(float), (t, json) => json.Double },
 			{ typeof(bool), (t, json) => json.Boolean },