diff --git a/Source/Libs/GtkSharp/GtkSharp.targets b/Source/Libs/GtkSharp/GtkSharp.targets
index c2b39d9c0..aee2acc5d 100644
--- a/Source/Libs/GtkSharp/GtkSharp.targets
+++ b/Source/Libs/GtkSharp/GtkSharp.targets
@@ -5,7 +5,7 @@
     <GtkDir Condition=" '$(GtkDir)' == '' ">$(LOCALAPPDATA)\Gtk\3.24</GtkDir>
   </PropertyGroup>
 
-  <Target Name="InstallGtk" BeforeTargets="Build" Condition=" '$(SkipGtkInstall)' != 'True' and !Exists('$(GtkDir)/libgtk-3-0.dll') ">
+  <Target Name="InstallGtk" BeforeTargets="Build" Condition=" '$(SkipGtkInstall)' != 'True' and '$(OS)' == 'Windows_NT' and !Exists('$(GtkDir)/libgtk-3-0.dll') ">
     <Message Importance="High" Text="Gtk has not been detected, downloading and installing it, set SkipGtkInstall to True to skip theese steps."/>
     <Message Importance="High" Text="Ignore Gtk extract errors, bug msbuild/issues/3884"/>
     <MakeDir Directories="$(GtkDir)"/>