diff --git a/src/System.Management.Automation/engine/hostifaces/PowerShell.cs b/src/System.Management.Automation/engine/hostifaces/PowerShell.cs
index 54ddd650e37..d1b26a1e111 100644
--- a/src/System.Management.Automation/engine/hostifaces/PowerShell.cs
+++ b/src/System.Management.Automation/engine/hostifaces/PowerShell.cs
@@ -4499,7 +4499,9 @@ private void CoreInvokeHelper<TInput, TOutput>(PSDataCollection<TInput> input, P
                 {
                     if (pool != null)
                     {
+#if !UNIX
                         VerifyThreadSettings(settings, pool.ApartmentState, pool.ThreadOptions, false);
+#endif
 
                         // getting the runspace asynchronously so that Stop can be supported from a different
                         // thread.
@@ -4512,7 +4514,9 @@ private void CoreInvokeHelper<TInput, TOutput>(PSDataCollection<TInput> input, P
                         rsToUse = _rsConnection as Runspace;
                         if (rsToUse != null)
                         {
+#if !UNIX
                             VerifyThreadSettings(settings, rsToUse.ApartmentState, rsToUse.ThreadOptions, false);
+#endif
 
                             if (rsToUse.RunspaceStateInfo.State != RunspaceState.Opened)
                             {
@@ -4777,7 +4781,9 @@ private IAsyncResult CoreInvokeAsync<TInput, TOutput>(PSDataCollection<TInput> i
                 {
                     if (pool != null)
                     {
+#if !UNIX
                         VerifyThreadSettings(settings, pool.ApartmentState, pool.ThreadOptions, pool.IsRemote);
+#endif
 
                         pool.AssertPoolIsOpen();
 
@@ -4854,7 +4860,9 @@ private IAsyncResult CoreInvokeAsync<TInput, TOutput>(PSDataCollection<TInput> i
                         LocalRunspace rs = _rsConnection as LocalRunspace;
                         if (rs != null)
                         {
+#if !UNIX
                             VerifyThreadSettings(settings, rs.ApartmentState, rs.ThreadOptions, false);
+#endif
 
                             if (rs.RunspaceStateInfo.State != RunspaceState.Opened)
                             {
@@ -4904,6 +4912,8 @@ private IAsyncResult CoreInvokeAsync<TInput, TOutput>(PSDataCollection<TInput> i
             return _invokeAsyncResult;
         }
 
+        // Apartment thread state does not apply to non-Windows platforms.
+#if !UNIX
         /// <summary>
         /// Verifies the settings for ThreadOptions and ApartmentState.
         /// </summary>
@@ -4938,6 +4948,7 @@ private void VerifyThreadSettings(PSInvocationSettings settings, ApartmentState
                 }
             }
         }
+#endif
 
         /// <summary>
         /// </summary>