diff --git a/src/backend/threads.c b/src/backend/threads.c
index 773568f7b..1781832e3 100644
--- a/src/backend/threads.c
+++ b/src/backend/threads.c
@@ -182,8 +182,7 @@ lumiera_thread_destroy (LumieraThread self)
 void
 lumiera_thread_delete (LumieraThread self)
 {
-  TRACE(threads);
-  ECHO ("deleting thread");
+  TRACE(threads, "deleting thread");
   lumiera_free (lumiera_thread_destroy (self));
 }