diff --git a/server/TracyWorker.cpp b/server/TracyWorker.cpp
index 91e09eab..f26096d7 100644
--- a/server/TracyWorker.cpp
+++ b/server/TracyWorker.cpp
@@ -4129,6 +4129,7 @@ void Worker::ProcessContextSwitch( const QueueContextSwitch& ev )
 
         auto& cx = cs.push_next();
         cx.SetStart( time );
+        cx.SetEnd( -1 );
         cx.SetThread( ev.newThread );
 
         // At this point that check is approximate