diff --git a/indra/llcommon/workqueue.h b/indra/llcommon/workqueue.h
index 87fdd1517f26ce956af2b97c67b77d1efae8451f..ec0700a718756aa8a09fe0e29cd6b1a64e6c4119 100644
--- a/indra/llcommon/workqueue.h
+++ b/indra/llcommon/workqueue.h
@@ -573,7 +573,7 @@ namespace LL
                 std::forward<ARGS>(args)...);
             if (! posted)
             {
-                LLTHROW(Closed);
+                LLTHROW(WorkQueueBase::Closed());
             }
             auto future{ LLCoros::getFuture(promise) };
             // now, on the calling thread, wait for that result
@@ -608,7 +608,7 @@ namespace LL
                 std::forward<ARGS>(args)...);
             if (! posted)
             {
-                LLTHROW(Closed);
+                LLTHROW(WorkQueueBase::Closed());
             }
             auto future{ LLCoros::getFuture(promise) };
             // block until set_value()