diff --git a/Duplicati/GUI/Duplicati.GUI.TrayIcon/Duplicati.GUI.TrayIcon.csproj b/Duplicati/GUI/Duplicati.GUI.TrayIcon/Duplicati.GUI.TrayIcon.csproj
index 84c8251288..769ad06247 100644
--- a/Duplicati/GUI/Duplicati.GUI.TrayIcon/Duplicati.GUI.TrayIcon.csproj
+++ b/Duplicati/GUI/Duplicati.GUI.TrayIcon/Duplicati.GUI.TrayIcon.csproj
@@ -43,7 +43,7 @@
       <HintPath>..\..\..\thirdparty\MonoMac\MonoMac.dll</HintPath>
     </Reference>
     <Compile Remove="CocoaRunner.cs" />
-    <Compile Include="CocoaRunner.cs" Condition="Exists('\Library\Frameworks\Xamarin.Mac.framework') And !$(DefineConstants.Contains(__LEGACY_TOOLKITS__))">
+    <Compile Include="CocoaRunner.cs" Condition="Exists('\Library\Frameworks\Xamarin.Mac.framework') And $(DefineConstants.Contains(__LEGACY_TOOLKITS__))">
       <DependentUpon>CocoaRunner.cs</DependentUpon>
     </Compile>
   </ItemGroup>
diff --git a/Duplicati/GUI/Duplicati.GUI.TrayIcon/Program.cs b/Duplicati/GUI/Duplicati.GUI.TrayIcon/Program.cs
index d6b8c84e44..7fba3811df 100644
--- a/Duplicati/GUI/Duplicati.GUI.TrayIcon/Program.cs
+++ b/Duplicati/GUI/Duplicati.GUI.TrayIcon/Program.cs
@@ -335,7 +335,7 @@ private static TrayIconBase RunTrayIcon(string toolkit)
 #endif
         [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)]
         private static TrayIconBase GetCocoaRunnerInstance() { 
-#if XAMARIN_MAC && !__LEGACY_TOOLKITS__
+#if XAMARIN_MAC && __LEGACY_TOOLKITS__
             return new CocoaRunner();
 #else
             throw new UserInformationException("Xamarin.Mac framework not found", "TrayIconMissingXamarinMac");