diff --git a/nuget/LibSassHost.Native.win-x64/build/LibSassHost.Native.win-x64.props b/nuget/LibSassHost.Native.win-x64/build/LibSassHost.Native.win-x64.props
index bba0bd9..b5f83d9 100644
--- a/nuget/LibSassHost.Native.win-x64/build/LibSassHost.Native.win-x64.props
+++ b/nuget/LibSassHost.Native.win-x64/build/LibSassHost.Native.win-x64.props
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-	<ItemGroup>
+	<ItemGroup Condition=" Exists('packages.config') Or Exists('packages.$(MSBuildProjectName).config') ">
 		<None Include="$(MSBuildThisFileDirectory)..\runtimes\win7-x64\native\libsass.dll">
 			<Link>x64\libsass.dll</Link>
 			<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
diff --git a/nuget/LibSassHost.Native.win-x86/build/LibSassHost.Native.win-x86.props b/nuget/LibSassHost.Native.win-x86/build/LibSassHost.Native.win-x86.props
index 3a50a86..0adc129 100644
--- a/nuget/LibSassHost.Native.win-x86/build/LibSassHost.Native.win-x86.props
+++ b/nuget/LibSassHost.Native.win-x86/build/LibSassHost.Native.win-x86.props
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-	<ItemGroup>
+	<ItemGroup Condition=" Exists('packages.config') Or Exists('packages.$(MSBuildProjectName).config') ">
 		<None Include="$(MSBuildThisFileDirectory)..\runtimes\win7-x86\native\libsass.dll">
 			<Link>x86\libsass.dll</Link>
 			<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>