diff --git a/build.cake b/build.cake
index 02f1f54f..8fec89b7 100644
--- a/build.cake
+++ b/build.cake
@@ -24,10 +24,14 @@ Task("Build")
     {
         var settings = new DotNetCoreBuildSettings
         {
-            Framework = "netcoreapp2.0",
+            Framework = "netstandard1.0",
             Configuration = "Release"
         };
-        DotNetCoreBuild("./tests/SharpCompress.Test/SharpCompress.Test.csproj", settings);
+
+        DotNetCoreBuild("./src/SharpCompress/SharpCompress.csproj", settings);
+
+        settings.Framework = "netstandard2.0";
+        DotNetCoreBuild("./src/SharpCompress/SharpCompress.csproj", settings);
     }
 });
 
@@ -35,19 +39,16 @@ Task("Test")
   .IsDependentOn("Build")
   .Does(() =>
 {
-    if (!bool.Parse(EnvironmentVariable("APPVEYOR") ?? "false")
-        && !bool.Parse(EnvironmentVariable("TRAVIS") ?? "false"))
+    var files = GetFiles("tests/**/*.csproj");
+    foreach(var file in files)
     {
-        var files = GetFiles("tests/**/*.csproj");
-        foreach(var file in files)
+        var settings = new DotNetCoreTestSettings
         {
-            var settings = new DotNetCoreTestSettings
-            {
-                Configuration = "Release",
-                Framework = "netcoreapp2.0"
-            };
+            Configuration = "Release",
+            Framework = "netcoreapp2.0"
+        };
 
-            DotNetCoreTest(file.ToString(), settings);
+        DotNetCoreTest(file.ToString(), settings);
 
 
             settings = new DotNetCoreTestSettings
@@ -57,11 +58,6 @@ Task("Test")
             };
 
             DotNetCoreTest(file.ToString(), settings);
-        }
-    } 
-    else 
-    {
-        Information("Skipping tests as this is AppVeyor or Travis CI");
     }
 });
 
diff --git a/src/SharpCompress/SharpCompress.csproj b/src/SharpCompress/SharpCompress.csproj
index a8669110..7892a43b 100644
--- a/src/SharpCompress/SharpCompress.csproj
+++ b/src/SharpCompress/SharpCompress.csproj
@@ -6,7 +6,7 @@
     <AssemblyVersion>0.18.2.0</AssemblyVersion>
     <FileVersion>0.18.2.0</FileVersion>
     <Authors>Adam Hathcock</Authors>
-    <TargetFrameworks Condition="'$(LibraryFrameworks)'==''">net45;net35;netstandard2.0</TargetFrameworks>
+    <TargetFrameworks Condition="'$(LibraryFrameworks)'==''">net45;net35;netstandard1.0;netstandard2.0</TargetFrameworks>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <AssemblyName>SharpCompress</AssemblyName>
@@ -21,4 +21,7 @@
     <GenerateAssemblyProductAttribute>false</GenerateAssemblyProductAttribute>
     <Description>SharpCompress is a compression library for NET Standard 1.0  that can unrar, decompress 7zip, decompress xz, zip/unzip, tar/untar lzip/unlzip, bzip2/unbzip2 and gzip/ungzip with forward-only reading and file random access APIs. Write support for zip/tar/bzip2/gzip is implemented.</Description>
   </PropertyGroup>
+  <PropertyGroup Condition=" '$(TargetFramework)' == 'netstandard1.0' ">
+    <DefineConstants>$(DefineConstants);NO_FILE;NO_CRYPTO;SILVERLIGHT</DefineConstants>
+  </PropertyGroup>
 </Project>
\ No newline at end of file
diff --git a/tests/SharpCompress.Test/SharpCompress.Test.csproj b/tests/SharpCompress.Test/SharpCompress.Test.csproj
index 8dbcecb1..a8651e7c 100644
--- a/tests/SharpCompress.Test/SharpCompress.Test.csproj
+++ b/tests/SharpCompress.Test/SharpCompress.Test.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp1.1;netcoreapp2.0</TargetFrameworks>
+    <TargetFrameworks>netcoreapp2.0</TargetFrameworks>
     <AssemblyName>SharpCompress.Test</AssemblyName>
     <AssemblyOriginatorKeyFile>../../SharpCompress.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>