diff --git a/ZeroMQ.VS.csproj b/ZeroMQ.VS.csproj
index 018894f1..f2636d34 100644
--- a/ZeroMQ.VS.csproj
+++ b/ZeroMQ.VS.csproj
@@ -16,6 +16,7 @@
     <RestorePackages>true</RestorePackages>
     <TargetFrameworkProfile>
     </TargetFrameworkProfile>
+    <UseMSBuildEngine>False</UseMSBuildEngine>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -27,7 +28,7 @@
     <WarningLevel>4</WarningLevel>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <!-- XML documentation file for Debug configuration -->
-    <DocumentationFile>bin\Debug\ZeroMQ.XML</DocumentationFile>
+    <DocumentationFile>bin\Debug\ZeroMQ.xml</DocumentationFile>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <Optimize>true</Optimize>
@@ -37,7 +38,7 @@
     <WarningLevel>4</WarningLevel>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <!-- XML documentation file for Release configuration -->
-    <DocumentationFile>bin\Release\ZeroMQ.XML</DocumentationFile>
+    <DocumentationFile>bin\Release\ZeroMQ.xml</DocumentationFile>
   </PropertyGroup>
   <PropertyGroup>
     <SignAssembly>true</SignAssembly>
@@ -134,4 +135,4 @@
     <None Include="ZeroMQ.snk" />
   </ItemGroup>
   <ItemGroup />
-</Project>
\ No newline at end of file
+</Project>
diff --git a/ZeroMQ.mono.csproj b/ZeroMQ.mono.csproj
index 997df12d..3a7a72b2 100644
--- a/ZeroMQ.mono.csproj
+++ b/ZeroMQ.mono.csproj
@@ -14,6 +14,7 @@
     <RestorePackages>true</RestorePackages>
     <TargetFrameworkProfile>
     </TargetFrameworkProfile>
+    <UseMSBuildEngine>False</UseMSBuildEngine>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -25,7 +26,7 @@
     <WarningLevel>4</WarningLevel>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <!-- XML documentation file for Debug configuration -->
-    <DocumentationFile>bin\Debug\ZeroMQ.XML</DocumentationFile>
+    <DocumentationFile>bin\Debug\ZeroMQ.xml</DocumentationFile>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <Optimize>true</Optimize>
@@ -35,7 +36,7 @@
     <WarningLevel>4</WarningLevel>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <!-- XML documentation file for Release configuration -->
-    <DocumentationFile>bin\Release\ZeroMQ.XML</DocumentationFile>
+    <DocumentationFile>bin\Release\ZeroMQ.xml</DocumentationFile>
   </PropertyGroup>
   <PropertyGroup>
     <SignAssembly>true</SignAssembly>
@@ -133,4 +134,4 @@
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </Content>
   </ItemGroup>
-</Project>
\ No newline at end of file
+</Project>