1 files changed, 1 insertions, 1 deletions

diff --git a/unit_trace/earliest.py b/unit_trace/earliest.py
index 2d963dc..03e08d7 100644
--- a/unit_trace/earliest.py
+++ b/unit_trace/earliest.py
@@ -11,7 +11,7 @@
 def earliest(stream, earliest):
     for record in stream:
         if record.record_type=="event":
-            if record.when < earliest:
+            if record.id < earliest:
                 pass
             else:
                 yield record