diff --git a/BSIPA-Net4-Meta/BSIPA-Net4-Meta.csproj b/BSIPA-Net4-Meta/BSIPA-Net4-Meta.csproj
index 943ab8cf..58e6d8c3 100644
--- a/BSIPA-Net4-Meta/BSIPA-Net4-Meta.csproj
+++ b/BSIPA-Net4-Meta/BSIPA-Net4-Meta.csproj
@@ -19,7 +19,7 @@
     <DebugSymbols>true</DebugSymbols>
     <DebugType>full</DebugType>
     <Optimize>false</Optimize>
-    <OutputPath>bin\Debug\</OutputPath>
+    <OutputPath>bin\Debug_Net4\</OutputPath>
     <DefineConstants>DEBUG;TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
@@ -30,7 +30,7 @@
     <PlatformTarget>AnyCPU</PlatformTarget>
     <DebugType>pdbonly</DebugType>
     <Optimize>true</Optimize>
-    <OutputPath>bin\Release\</OutputPath>
+    <OutputPath>bin\Release_Net4\</OutputPath>
     <DefineConstants>TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
@@ -42,7 +42,7 @@
     <DebugSymbols>true</DebugSymbols>
     <DebugType>full</DebugType>
     <Optimize>false</Optimize>
-    <OutputPath>bin\Verbose\</OutputPath>
+    <OutputPath>bin\Verbose_Net4\</OutputPath>
     <DefineConstants>DEBUG;TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
@@ -53,7 +53,7 @@
     <PlatformTarget>AnyCPU</PlatformTarget>
     <DebugType>pdbonly</DebugType>
     <Optimize>true</Optimize>
-    <OutputPath>bin\Verbose_Release\</OutputPath>
+    <OutputPath>bin\Verbose_Release_Net4\</OutputPath>
     <DefineConstants>TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>