1 files changed, 2 insertions, 1 deletions
diff --git a/lib/tracer.rb b/lib/tracer.rb
index 54179dd193..149d50314f 100644
--- a/lib/tracer.rb
+++ b/lib/tracer.rb
@@ -121,6 +121,7 @@ class Tracer
       return unless p.call event, file, line, id, binding, klass
     end
     
+    saved_crit = Thread.critical
     Thread.critical = true
     stdout.printf("#%d:%s:%d:%s:%s: %s",
       get_thread_no,
@@ -129,7 +130,7 @@ class Tracer
       klass || '',
       EVENT_SYMBOL[event],
       get_line(file, line))
-    Thread.critical = false
+    Thread.critical = saved_crit
   end
 
   Single = new