diff --git a/src/Generator.Rewrite/OpenTKAssemblyResolver.cs b/src/Generator.Rewrite/OpenTKAssemblyResolver.cs
index 092cf84c..61f32a2e 100644
--- a/src/Generator.Rewrite/OpenTKAssemblyResolver.cs
+++ b/src/Generator.Rewrite/OpenTKAssemblyResolver.cs
@@ -53,7 +53,14 @@ namespace OpenTK.Rewrite
 
             var framework_dir = Path.GetDirectoryName(typeof(object).Module.FullyQualifiedName);
             var framework_dirs = on_mono
-                ? new[] { framework_dir, Path.Combine(framework_dir, "Facades") }
+                ? new[]
+            {
+                framework_dir,
+                Path.Combine(framework_dir, "Facades"),
+                "/Library/Frameworks/Xamarin.iOS.framework/Versions/Current/lib/mono/Xamarin.iOS",
+                "/Library/Frameworks/Xamarin.iOS.framework/Versions/Current/lib/mono/Xamarin.iOS/Facades",
+                "/Library/Frameworks/Xamarin.Android.framework/Versions/Current/lib/mono/2.1"
+            }
                 : new[] { framework_dir };
 
             if (IsZero(name.Version))
diff --git a/src/OpenTK/OpenTK.iOS.csproj b/src/OpenTK/OpenTK.iOS.csproj
index efc9795e..621534eb 100644
--- a/src/OpenTK/OpenTK.iOS.csproj
+++ b/src/OpenTK/OpenTK.iOS.csproj
@@ -247,10 +247,10 @@
   </Target>
   -->
   <Target Name="AfterBuild">
-    <Exec Command="$(OutputPath)..\..\..\..\Generator.Rewrite\bin\Debug\Rewrite.exe $(OutputPath)OpenTK.dll ..\..\OpenTK.snk -dllimport -debug" Condition="$(OS) == 'Windows_NT' and $(Configuration) == 'Debug'" />
-    <Exec Command="$(OutputPath)..\..\..\..\Generator.Rewrite\bin\Release\Rewrite.exe $(OutputPath)OpenTK.dll ..\..\OpenTK.snk -dllimport" Condition="$(OS) == 'Windows_NT' and $(Configuration) == 'Release'" />
-    <Exec WorkingDirectory="$(SolutionDir)src/Generator.Rewrite/bin/Debug/" Command="mono ./Rewrite.exe $(SolutionDir)src/OpenTK/bin/Debug/iOS/OpenTK.dll $(SolutionDir)OpenTK.snk -dllimport -debug" Condition="$(OS) != 'Windows_NT' and $(Configuration) == 'Debug'" />
-    <Exec WorkingDirectory="$(SolutionDir)src/Generator.Rewrite/bin/Release" Command="mono ./Rewrite.exe $(SolutionDir)src/OpenTK/bin/Release/iOS/OpenTK.dll $(SolutionDir)OpenTK.snk -dllimport" Condition="$(OS) != 'Windows_NT' and $(Configuration) == 'Release'" />
+    <Exec Condition="$(OS) == 'Windows_NT' and $(Configuration) == 'Debug'" Command="$(OutputPath)..\..\..\..\Generator.Rewrite\bin\Debug\Rewrite.exe --assembly $(OutputPath)OpenTK.dll --signing-key ..\..\OpenTK.snk --debug" />
+    <Exec Condition="$(OS) == 'Windows_NT' and $(Configuration) == 'Release'" Command="$(OutputPath)..\..\..\..\Generator.Rewrite\bin\Release\Rewrite.exe --assembly $(OutputPath)OpenTK.dll --signing-key ..\..\OpenTK.snk" />
+    <Exec Condition="$(OS) != 'Windows_NT' and $(Configuration) == 'Debug'" Command="mono $(OutputPath)../../../../Generator.Rewrite/bin/Debug/Rewrite.exe --assembly $(OutputPath)OpenTK.dll --signing-key ../../OpenTK.snk --debug" />
+    <Exec Condition="$(OS) != 'Windows_NT' and $(Configuration) == 'Release'" Command="mono $(OutputPath)../../../../Generator.Rewrite/bin/Release/Rewrite.exe --assembly $(OutputPath)OpenTK.dll --signing-key ../../OpenTK.snk" />
   </Target>
   <ItemGroup>
     <Analyzer Include="..\..\packages\StyleCop.Analyzers\analyzers\dotnet\cs\StyleCop.Analyzers.CodeFixes.dll">