diff --git a/tools/profiling/microbenchmarks/bm_diff.py b/tools/profiling/microbenchmarks/bm_diff.py
index 339e9595185..d6119332a77 100755
--- a/tools/profiling/microbenchmarks/bm_diff.py
+++ b/tools/profiling/microbenchmarks/bm_diff.py
@@ -65,8 +65,8 @@ nanos = {
   'pct_diff': 5,
 }
 counter = {
-  'abs_diff': 1,
-  'pct_diff': 1,
+  'abs_diff': 0.5,
+  'pct_diff': 0.5,
 }
 
 _INTERESTING = {