diff --git a/src/scheduler.cpp b/src/scheduler.cpp
index 184ddc28abb..52777b61f96 100644
--- a/src/scheduler.cpp
+++ b/src/scheduler.cpp
@@ -79,6 +79,7 @@ void CScheduler::serviceQueue()
         }
     }
     --nThreadsServicingQueue;
+    newTaskScheduled.notify_one();
 }
 
 void CScheduler::stop(bool drain)