diff --git a/lldb/test/API/macosx/queues/TestQueues.py b/lldb/test/API/macosx/queues/TestQueues.py
--- a/lldb/test/API/macosx/queues/TestQueues.py
+++ b/lldb/test/API/macosx/queues/TestQueues.py
@@ -192,7 +192,6 @@
         user_initiated_thread = lldb.SBThread()
         user_interactive_thread = lldb.SBThread()
         utility_thread = lldb.SBThread()
-        unspecified_thread = lldb.SBThread()
         background_thread = lldb.SBThread()
         for th in process.threads:
             if th.GetName() == "user initiated QoS":
@@ -201,8 +200,6 @@
                 user_interactive_thread = th
             if th.GetName() == "utility QoS":
                 utility_thread = th
-            if th.GetName() == "unspecified QoS":
-                unspecified_thread = th
             if th.GetName() == "background QoS":
                 background_thread = th
 
@@ -213,9 +210,6 @@
             user_interactive_thread.IsValid(),
             "Found user interactive QoS thread")
         self.assertTrue(utility_thread.IsValid(), "Found utility QoS thread")
-        self.assertTrue(
-            unspecified_thread.IsValid(),
-            "Found unspecified QoS thread")
         self.assertTrue(
             background_thread.IsValid(),
             "Found background QoS thread")
@@ -248,16 +242,6 @@
             stream.GetData(), "Utility",
             "utility QoS thread name is valid")
         stream.Clear()
-        self.assertTrue(
-            unspecified_thread.GetInfoItemByPathAsString(
-                "requested_qos.printable_name",
-                stream),
-            "Get QoS printable string for unspecified QoS thread")
-        qosName = stream.GetData()
-        self.assertTrue(
-            qosName == "User Initiated" or qosName == "Default",
-            "unspecified QoS thread name is valid: " + str(qosName))
-        stream.Clear()
         self.assertTrue(
             background_thread.GetInfoItemByPathAsString(
                 "requested_qos.printable_name",
diff --git a/lldb/test/API/macosx/queues/main.c b/lldb/test/API/macosx/queues/main.c
--- a/lldb/test/API/macosx/queues/main.c
+++ b/lldb/test/API/macosx/queues/main.c
@@ -136,15 +136,9 @@
             while (1)
                 sleep (10);
       });
-    dispatch_async (dispatch_get_global_queue(QOS_CLASS_UNSPECIFIED, 0), ^{
-            pthread_setname_np ("unspecified QoS");
-            atomic_fetch_add(&thread_count, 1);
-            while (1)
-                sleep (10);
-      });
 
     // Unfortunately there is no pthread_barrier on darwin.
-    while ((atomic_load(&thread_count) < 13) || (finished_enqueueing_work == 0))
+    while ((atomic_load(&thread_count) < 12) || (finished_enqueueing_work == 0))
         sleep (1);
 
     stopper ();