diff --git a/benchmark/parse_log.py b/benchmark/parse_log.py
index 29ce97312ee85e33862c5ff35045ac5ecb9c73fa..310c7822df555c58493cb5ef1d72d44bb9d434c8 100644
--- a/benchmark/parse_log.py
+++ b/benchmark/parse_log.py
@@ -41,7 +41,7 @@ def parse(file, parse_times = PARSE_FULL):
                     times[name] = time
             continue
         # nothing else we know about, ignore
-        print("Ignoring line",line)
+        print("Ignoring line",line,"(in commit {})".format(commit))
     # end of file. previous commit, if any, is done now.
     if commit is not None:
         yield Result(commit, times)