diff --git a/src/ServiceControl.AcceptanceTests.RavenDB/SetupFixture.cs b/src/ServiceControl.AcceptanceTests.RavenDB/SetupFixture.cs
deleted file mode 100644
index 5a24a3417e..0000000000
--- a/src/ServiceControl.AcceptanceTests.RavenDB/SetupFixture.cs
+++ /dev/null
@@ -1,29 +0,0 @@
-namespace ServiceControl.AcceptanceTests.RavenDB;
-
-using System;
-using System.Diagnostics;
-using System.Runtime.InteropServices;
-using System.Threading;
-using System.Threading.Tasks;
-using NUnit.Framework;
-
-[SetUpFixture]
-public class SetupFixture
-{
-    [OneTimeSetUp]
-    public async Task Setup()
-    {
-        if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
-        {
-            ServiceBus.Management.Infrastructure.Installers.EventSourceCreator.Create();
-
-            //There is a delay for this becoming true, tests will fall over if they interleave in the wrong way.
-            var cts = new CancellationTokenSource(TimeSpan.FromSeconds(60));
-            while (!EventLog.SourceExists(ServiceBus.Management.Infrastructure.Installers.EventSourceCreator.SourceName))
-            {
-                cts.Token.ThrowIfCancellationRequested();
-                await Task.Delay(500, CancellationToken.None);
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/ServiceControl.AcceptanceTests/SetupFixture.cs b/src/ServiceControl.AcceptanceTests/SetupFixture.cs
new file mode 100644
index 0000000000..55ddf35101
--- /dev/null
+++ b/src/ServiceControl.AcceptanceTests/SetupFixture.cs
@@ -0,0 +1,42 @@
+namespace ServiceControl.AcceptanceTests;
+
+using System;
+using System.Diagnostics;
+using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
+using System.Threading;
+using System.Threading.Tasks;
+using NUnit.Framework;
+using ServiceBus.Management.Infrastructure.Installers;
+
+[SetUpFixture]
+public class SetupFixture
+{
+    [OneTimeSetUp]
+    public async Task Setup()
+    {
+        if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+        {
+            return;
+        }
+
+        // Every test runs the setup command, which creates the event source if it is missing. Tests run in
+        // parallel, so without creating it up front several of them race and all but one fail with
+        // "Source ServiceControl already exists".
+        EventSourceCreator.Create();
+
+        await WaitForSource(EventSourceCreator.SourceName);
+    }
+
+    //There is a delay for this becoming true, tests will fall over if they interleave in the wrong way.
+    [SupportedOSPlatform("windows")]
+    static async Task WaitForSource(string sourceName)
+    {
+        var cts = new CancellationTokenSource(TimeSpan.FromSeconds(60));
+        while (!EventLog.SourceExists(sourceName))
+        {
+            cts.Token.ThrowIfCancellationRequested();
+            await Task.Delay(500, CancellationToken.None);
+        }
+    }
+}
diff --git a/src/ServiceControl.Audit.AcceptanceTests.RavenDB/SetupFixture.cs b/src/ServiceControl.Audit.AcceptanceTests.RavenDB/SetupFixture.cs
deleted file mode 100644
index 100af7975a..0000000000
--- a/src/ServiceControl.Audit.AcceptanceTests.RavenDB/SetupFixture.cs
+++ /dev/null
@@ -1,29 +0,0 @@
-namespace ServiceControl.Audit.AcceptanceTests.RavenDB;
-
-using System;
-using System.Diagnostics;
-using System.Runtime.InteropServices;
-using System.Threading;
-using System.Threading.Tasks;
-using NUnit.Framework;
-
-[SetUpFixture]
-public class SetupFixture
-{
-    [OneTimeSetUp]
-    public async Task Setup()
-    {
-        if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
-        {
-            Infrastructure.EventSourceCreator.Create();
-
-            //There is a delay for this becoming true, tests will fall over if they interleave in the wrong way.
-            var cts = new CancellationTokenSource(TimeSpan.FromSeconds(60));
-            while (!EventLog.SourceExists(Infrastructure.EventSourceCreator.SourceName))
-            {
-                cts.Token.ThrowIfCancellationRequested();
-                await Task.Delay(500, CancellationToken.None);
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/ServiceControl.Audit.AcceptanceTests/SetupFixture.cs b/src/ServiceControl.Audit.AcceptanceTests/SetupFixture.cs
new file mode 100644
index 0000000000..70acaa0843
--- /dev/null
+++ b/src/ServiceControl.Audit.AcceptanceTests/SetupFixture.cs
@@ -0,0 +1,42 @@
+namespace ServiceControl.Audit.AcceptanceTests;
+
+using System;
+using System.Diagnostics;
+using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
+using System.Threading;
+using System.Threading.Tasks;
+using NUnit.Framework;
+using ServiceControl.Audit.Infrastructure;
+
+[SetUpFixture]
+public class SetupFixture
+{
+    [OneTimeSetUp]
+    public async Task Setup()
+    {
+        if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+        {
+            return;
+        }
+
+        // Every test runs the setup command, which creates the event source if it is missing. Tests run in
+        // parallel, so without creating it up front several of them race and all but one fail with
+        // "Source ServiceControl.Audit already exists".
+        EventSourceCreator.Create();
+
+        await WaitForSource(EventSourceCreator.SourceName);
+    }
+
+    //There is a delay for this becoming true, tests will fall over if they interleave in the wrong way.
+    [SupportedOSPlatform("windows")]
+    static async Task WaitForSource(string sourceName)
+    {
+        var cts = new CancellationTokenSource(TimeSpan.FromSeconds(60));
+        while (!EventLog.SourceExists(sourceName))
+        {
+            cts.Token.ThrowIfCancellationRequested();
+            await Task.Delay(500, CancellationToken.None);
+        }
+    }
+}