diff --git a/build/Build.cs b/build/Build.cs
index cf860a36b..cff8b00e5 100644
--- a/build/Build.cs
+++ b/build/Build.cs
@@ -19,7 +19,10 @@
 using Serilog;
 using static Nuke.Common.Tools.DotNet.DotNetTasks;
 
+// macOS build agents are persistent (non-ephemeral), so compiler server processes may need to be cleaned up between builds.
+#if MACOS
 [ShutdownDotNetAfterServerBuild]
+#endif
 partial class Build : NukeBuild
 {
     /// Support plugins are available for:
diff --git a/build/_build.csproj b/build/_build.csproj
index 80f35fe22..611439dd6 100644
--- a/build/_build.csproj
+++ b/build/_build.csproj
@@ -8,6 +8,7 @@
     <NukeScriptDirectory>..</NukeScriptDirectory>
     <NukeTelemetryVersion>1</NukeTelemetryVersion>
     <Nullable>enable</Nullable>
+    <DefineConstants Condition="$([MSBuild]::IsOSPlatform('OSX'))">$(DefineConstants);MACOS</DefineConstants>
   </PropertyGroup>
 
   <ItemGroup>