diff --git a/tools/profiling/microbenchmarks/bm_diff.py b/tools/profiling/microbenchmarks/bm_diff.py
index 09b62ae1c9067d9b40a933269af3f04d82c846ee..6ee4cbfc7bb18725e16db4584e109295a1a52386 100755
--- a/tools/profiling/microbenchmarks/bm_diff.py
+++ b/tools/profiling/microbenchmarks/bm_diff.py
@@ -56,6 +56,7 @@ _INTERESTING = (
   'writes_per_iteration',
   'atm_cas_per_iteration',
   'atm_add_per_iteration',
+  'nows_per_iteration',
 )
 
 def changed_ratio(n, o):