diff --git a/GUT.Schedule/GUTSchedule.Droid/Activities/ExportActivity.cs b/GUT.Schedule/GUTSchedule.Droid/Activities/ExportActivity.cs
index cfd3efd..2bfce55 100644
--- a/GUT.Schedule/GUTSchedule.Droid/Activities/ExportActivity.cs
+++ b/GUT.Schedule/GUTSchedule.Droid/Activities/ExportActivity.cs
@@ -46,8 +46,8 @@ namespace GUTSchedule.Droid.Activities
 				Android.Support.V7.App.AlertDialog.Builder builder = new Android.Support.V7.App.AlertDialog.Builder(this);
 				builder.SetMessage(Resources.GetText(Resource.String.connectionFailMessage))
 					.SetTitle(e.Message)
-					.SetPositiveButton("ОК", (s, e) => base.OnBackPressed())
-					.SetNegativeButton(Resources.GetText(Resource.String.repeat), (s, e) => Export());
+					.SetPositiveButton("ОК", (s, arg) => base.OnBackPressed())
+					.SetNegativeButton(Resources.GetText(Resource.String.repeat), (s, arg) => Export());
 
 				Android.Support.V7.App.AlertDialog dialog = builder.Create();
 				dialog.Show();
@@ -58,7 +58,7 @@ namespace GUTSchedule.Droid.Activities
 				Android.Support.V7.App.AlertDialog.Builder builder = new Android.Support.V7.App.AlertDialog.Builder(this);
 				builder.SetMessage(e.Message)
 					.SetTitle(e.GetType().ToString())
-					.SetPositiveButton("ОК", (s, e) => base.OnBackPressed());
+					.SetPositiveButton("ОК", (s, arg) => base.OnBackPressed());
 
 				Android.Support.V7.App.AlertDialog dialog = builder.Create();
 				dialog.Show();
diff --git a/GUT.Schedule/GUTSchedule.Droid/GUTSchedule.Droid.csproj b/GUT.Schedule/GUTSchedule.Droid/GUTSchedule.Droid.csproj
index f1ddd50..deef1b7 100644
--- a/GUT.Schedule/GUTSchedule.Droid/GUTSchedule.Droid.csproj
+++ b/GUT.Schedule/GUTSchedule.Droid/GUTSchedule.Droid.csproj
@@ -24,6 +24,7 @@
     <MonoAndroidAssetsPrefix>Assets</MonoAndroidAssetsPrefix>
     <AndroidEnableSGenConcurrent>true</AndroidEnableSGenConcurrent>
     <AndroidUseAapt2>true</AndroidUseAapt2>
+	<LangVersion>8.0</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>True</DebugSymbols>