diff --git a/src/Test/Utilities/CLRHelpers.cs b/src/Test/Utilities/CLRHelpers.cs
index ae3a7fd96c7d25407304def503cf4aeebeadd2a6..bea1f9f2659ce6bf24d47d73ddd6f37adf64ebc7 100644
--- a/src/Test/Utilities/CLRHelpers.cs
+++ b/src/Test/Utilities/CLRHelpers.cs
@@ -3,6 +3,7 @@
 using System;
 using System.Collections.Generic;
 using System.Collections.Immutable;
+using System.Diagnostics;
 using System.IO;
 using System.Linq;
 using System.Reflection;
@@ -47,6 +48,20 @@ private static Assembly ReflectionOnlyAssemblyResolveHandler(object sender, Reso
             return null;
         }
 
+        public static bool IsRunningOnMono()
+        {
+            return Type.GetType ("Mono.Runtime") != null;
+        }
+
+        public static object GetRuntimeInterfaceAsObject(Guid clsid, Guid riid)
+        {
+            // This API isn't available on Mono hence we must use reflection to access it.  
+            Debug.Assert(!IsRunningOnMono());
+
+            var getRuntimeInterfaceAsObject = typeof(RuntimeEnvironment).GetMethod("GetRuntimeInterfaceAsObject", BindingFlags.Public | BindingFlags.Static);
+            return getRuntimeInterfaceAsObject.Invoke(null, new object[] { clsid, riid });
+        }
+
         /// <summary>
         /// Verifies the specified image. Subscribe to <see cref="ReflectionOnlyAssemblyResolve"/> to provide a loader for dependent assemblies.
         /// </summary>
@@ -68,6 +83,13 @@ public static string[] PeVerify(string filePath)
 
         private static string[] PeVerify(byte[] peImage, int domainId, string assemblyPath)
         {
+            if (IsRunningOnMono())
+            {
+                // PEverify is currently unsupported on Mono hence return an empty 
+                // set of messages
+                return new string[] { };
+            }
+
             lock (s_guard)
             {
                 GCHandle pinned = GCHandle.Alloc(peImage, GCHandleType.Pinned);
@@ -75,10 +97,10 @@ private static string[] PeVerify(byte[] peImage, int domainId, string assemblyPa
                 {
                     IntPtr buffer = pinned.AddrOfPinnedObject();
 
-                    ICLRValidator validator = (ICLRValidator)RuntimeEnvironment.GetRuntimeInterfaceAsObject(s_clsIdClrRuntimeHost, typeof(ICLRRuntimeHost).GUID);
+                    ICLRValidator validator = (ICLRValidator)GetRuntimeInterfaceAsObject(s_clsIdClrRuntimeHost, typeof(ICLRRuntimeHost).GUID);
                     ValidationErrorHandler errorHandler = new ValidationErrorHandler(validator);
 
-                    IMetaDataDispenser dispenser = (IMetaDataDispenser)RuntimeEnvironment.GetRuntimeInterfaceAsObject(s_clsIdCorMetaDataDispenser, typeof(IMetaDataDispenser).GUID);
+                    IMetaDataDispenser dispenser = (IMetaDataDispenser)GetRuntimeInterfaceAsObject(s_clsIdCorMetaDataDispenser, typeof(IMetaDataDispenser).GUID);
 
                     // the buffer needs to be pinned during validation
                     Guid riid = typeof(IMetaDataImport).GUID;
diff --git a/src/Test/Utilities/TestUtilities.csproj b/src/Test/Utilities/TestUtilities.csproj
index bcc9f4c0836cf414dab38b469966fc9a7526ce46..4beaf32606dfef931ef16164f5f59e7485544e4b 100644
--- a/src/Test/Utilities/TestUtilities.csproj
+++ b/src/Test/Utilities/TestUtilities.csproj
@@ -106,9 +106,6 @@
     <Reference Include="xunit">
       <HintPath>..\..\..\packages\xunit.1.9.2\lib\net20\xunit.dll</HintPath>
     </Reference>
-    <Reference Include="PresentationCore" />
-    <Reference Include="PresentationFramework" />
-    <Reference Include="ReachFramework" />
     <Reference Include="System" />
     <Reference Include="System.Core" />
     <Reference Include="System.Xml" />
@@ -233,4 +230,4 @@
     <Import Project="..\..\..\build\Roslyn.Toolsets.Xunit.targets" />
     <Import Project="$(SolutionDir)\.nuget\NuGet.targets" Condition="Exists('$(SolutionDir)\.nuget\NuGet.targets')" />
   </ImportGroup>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/Tools/Microsoft.CodeAnalysis.Toolset.Open/Targets/GenerateCompilerInternals.targets b/src/Tools/Microsoft.CodeAnalysis.Toolset.Open/Targets/GenerateCompilerInternals.targets
index 580f7be2cabd26a3b7afff183301279edc7e80a0..e7aaaaa9cb0b82d970ab3056c3b3c21ac34c537a 100644
--- a/src/Tools/Microsoft.CodeAnalysis.Toolset.Open/Targets/GenerateCompilerInternals.targets
+++ b/src/Tools/Microsoft.CodeAnalysis.Toolset.Open/Targets/GenerateCompilerInternals.targets
@@ -33,6 +33,10 @@
       $(CleanDependsOn)
     </CleanDependsOn>
   </PropertyGroup>
+
+  <PropertyGroup>
+	<MonoPrefix Condition="'$(OS)' != 'Windows_NT'">mono </MonoPrefix>
+  </PropertyGroup>
   
   <Target
     Name="GenerateSyntaxModel"
@@ -40,14 +44,9 @@
     Outputs="@(SyntaxDefinition -> '$(IntermediateOutputPath)%(Filename)%(Extension).Generated$(DefaultLanguageSourceExtension)')"
     Condition="'$(Language)' == 'VB' or '$(Language)' == 'C#'"
   >
-    <PropertyGroup Condition="'$(Language)' == 'VB'">
-      <SyntaxGenerator>"$(VBSyntaxGeneratorToolPath)"</SyntaxGenerator>
-    </PropertyGroup>
-    <PropertyGroup Condition="'$(Language)' == 'C#'">
-      <SyntaxGenerator Condition=" '$(OS)' == 'Windows_NT' ">"$(CSharpSyntaxGeneratorToolPath)"</SyntaxGenerator>
-      <SyntaxGenerator Condition=" '$(OS)' != 'Windows_NT' ">mono $(CSharpSyntaxGeneratorToolPath)</SyntaxGenerator>
-    </PropertyGroup>
     <PropertyGroup>
+      <SyntaxGenerator Condition="'$(Language)' == 'VB'">$(MonoPrefix) "$(VBSyntaxGeneratorToolPath)"</SyntaxGenerator>
+      <SyntaxGenerator Condition="'$(Language)' == 'C#'">$(MonoPrefix) "$(CSharpSyntaxGeneratorToolPath)"</SyntaxGenerator>
       <GeneratedSyntaxModel>@(SyntaxDefinition -> '$(IntermediateOutputPath)%(Filename)%(Extension).Generated$(DefaultLanguageSourceExtension)')</GeneratedSyntaxModel>
     </PropertyGroup>
 
@@ -78,8 +77,6 @@
   >
     <PropertyGroup>
       <SyntaxGenerator>"$(VBSyntaxGeneratorToolPath)"</SyntaxGenerator>
-    </PropertyGroup>
-    <PropertyGroup>
       <GeneratedSyntaxModelGetText>@(SyntaxGetTextDefinition -> '$(IntermediateOutputPath)\%(FileName)%(Extension).Generated$(DefaultLanguageSourceExtension)')</GeneratedSyntaxModelGetText>
     </PropertyGroup>
 
@@ -109,14 +106,9 @@
     Outputs="@(SyntaxTestDefinition -> '$(IntermediateOutputPath)\%(FileName)%(Extension).Generated$(DefaultLanguageSourceExtension)')"
     Condition="'$(Language)' == 'VB' or '$(Language)' == 'C#'"
   >
-    <PropertyGroup Condition="'$(Language)' == 'VB'">
-      <SyntaxGenerator>"$(VBSyntaxGeneratorToolPath)"</SyntaxGenerator>
-    </PropertyGroup>
-    <PropertyGroup Condition="'$(Language)' == 'C#'">
-      <SyntaxGenerator Condition=" '$(OS)' == 'Windows_NT' ">"$(CSharpSyntaxGeneratorToolPath)"</SyntaxGenerator>
-      <SyntaxGenerator Condition=" '$(OS)' != 'Windows_NT' ">mono $(CSharpSyntaxGeneratorToolPath)</SyntaxGenerator>      
-    </PropertyGroup>
     <PropertyGroup>
+      <SyntaxGenerator Condition="'$(Language)' == 'VB'">$(MonoPrefix) "$(VBSyntaxGeneratorToolPath)"</SyntaxGenerator>
+      <SyntaxGenerator Condition="'$(Language)' == 'C#'">$(MonoPrefix) "$(CSharpSyntaxGeneratorToolPath)"</SyntaxGenerator>
       <GeneratedSyntaxModelTests>@(SyntaxTestDefinition -> '$(IntermediateOutputPath)\%(FileName)%(Extension).Generated$(DefaultLanguageSourceExtension)')</GeneratedSyntaxModelTests>
     </PropertyGroup>
 
@@ -147,8 +139,7 @@
     Condition="'$(Language)' == 'VB' or '$(Language)' == 'C#'"
   >
     <PropertyGroup>
-      <BoundTreeGenerator Condition=" '$(OS)' == 'Windows_NT' ">"$(BoundTreeGeneratorToolPath)"</BoundTreeGenerator>
-      <BoundTreeGenerator Condition=" '$(OS)' != 'Windows_NT' ">mono $(BoundTreeGeneratorToolPath)</BoundTreeGenerator>
+      <BoundTreeGenerator>$(MonoPrefix) "$(BoundTreeGeneratorToolPath)"</BoundTreeGenerator>
       <GeneratedBoundTree>@(BoundTreeDefinition -> '$(IntermediateOutputPath)%(Filename)%(Extension).Generated$(DefaultLanguageSourceExtension)')</GeneratedBoundTree>
     </PropertyGroup>
 
@@ -183,16 +174,9 @@
     Outputs="@(ErrorCode -> '$(IntermediateOutputPath)ErrorFacts.Generated$(DefaultLanguageSourceExtension)')"
     Condition="'$(Language)' == 'VB' or '$(Language)' == 'C#'"
   >
-    <PropertyGroup Condition="'$(Language)' == 'VB'">
-      <ErrorFactsGenerator>"$(VBErrorFactsGeneratorToolPath)"</ErrorFactsGenerator>
-    </PropertyGroup>
-
-    <PropertyGroup Condition="'$(Language)' == 'C#'">
-      <ErrorFactsGenerator Condition=" '$(OS)' == 'Windows_NT' ">"$(CSharpErrorFactsGeneratorToolPath)"</ErrorFactsGenerator>
-      <ErrorFactsGenerator Condition=" '$(OS)' != 'Windows_NT' ">mono $(CSharpErrorFactsGeneratorToolPath)</ErrorFactsGenerator>
-    </PropertyGroup>
-
     <PropertyGroup>
+      <ErrorFactsGenerator Condition="'$(Language)' == 'VB'">$(MonoPrefix) "$(VBErrorFactsGeneratorToolPath)"</ErrorFactsGenerator>
+      <ErrorFactsGenerator Condition="'$(Language)' == 'C#'">$(MonoPrefix) "$(CSharpErrorFactsGeneratorToolPath)"</ErrorFactsGenerator>
       <GeneratedErrorFacts>@(ErrorCode -> '$(IntermediateOutputPath)ErrorFacts.Generated$(DefaultLanguageSourceExtension)')</GeneratedErrorFacts>
     </PropertyGroup>