diff --git a/QSoft.Reg/Properties/AssemblyInfo.cs b/QSoft.Reg/Properties/AssemblyInfo.cs
index e7978b4..a8b4ebf 100644
--- a/QSoft.Reg/Properties/AssemblyInfo.cs
+++ b/QSoft.Reg/Properties/AssemblyInfo.cs
@@ -32,5 +32,5 @@
 // 您可以指定所有的值，或將組建編號或修訂編號設為預設值
 //方法是使用 '*'，如下所示:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.0.0.0")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
+[assembly: AssemblyVersion("1.0.0.1")]
+[assembly: AssemblyFileVersion("1.0.0.1")]
diff --git a/QSoft.Reg/QSoft.Registry.csproj b/QSoft.Reg/QSoft.Registry.csproj
index 4c07e7c..f05c4d4 100644
--- a/QSoft.Reg/QSoft.Registry.csproj
+++ b/QSoft.Reg/QSoft.Registry.csproj
@@ -9,7 +9,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>QSoft.Registry</RootNamespace>
     <AssemblyName>QSoft.Registry</AssemblyName>
-    <TargetFrameworkVersion>v4.7.2</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <Deterministic>true</Deterministic>
     <TargetFrameworkProfile />
diff --git a/QSoft.Reg/RegistryKeyEx.cs b/QSoft.Reg/RegistryKeyEx.cs
index 7a77c9c..dbe9ebc 100644
--- a/QSoft.Reg/RegistryKeyEx.cs
+++ b/QSoft.Reg/RegistryKeyEx.cs
@@ -195,8 +195,8 @@ public static int Count(this RegistryKey src, Func<RegistryKey, bool> func)
 
         public static IEnumerable<TResult> Select<TResult>(this RegistryKey src, Func<RegistryKey, TResult> select)
         {
-            string[] subkeynames = src.GetSubKeyNames();
-            foreach (var subkeyname in subkeynames)
+            //string[] subkeynames = src.GetSubKeyNames();
+            foreach (var subkeyname in src.GetSubKeyNames())
             {
                 RegistryKey reg = src.OpenSubKey(subkeyname);
                 TResult obj = select.Invoke(reg);