diff --git a/Common/Common.csproj b/Common/Common.csproj
index 6480322..b276843 100644
--- a/Common/Common.csproj
+++ b/Common/Common.csproj
@@ -45,6 +45,7 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="Config.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <ItemGroup>
diff --git a/Core/Config.cs b/Core/Config.cs
index a9cceeb..bbd14d9 100644
--- a/Core/Config.cs
+++ b/Core/Config.cs
@@ -7,26 +7,24 @@ namespace FLocal.Core {
 
 	public class Config<T> where T : Config<T> {
 
-		private static Config<T> _instance;
+		private static T _instance;
 
-		public static Config<T> instance {
+		public static T instance {
 			get {
 				if(_instance == null) throw new FLocalException("not initialized");
 				return _instance;
 			}
-			private set {
-				lock(_instance) {
-					if(_instance != null) throw new FLocalException("already initialized");
-					_instance = value;
-				}
-			}
 		}
 
-		private Config() {
+		protected Config() {
 		}
 
-		public static void doInit(Config<T> config) {
-			_instance = config;
+		protected static void doInit(Func<T> configCreator) {
+			if(_instance != null) throw new FLocalException("already initialized");
+			lock(_instance) {
+				if(_instance != null) throw new FLocalException("already initialized");
+				_instance = configCreator();
+			}
 		}
 
 	}