diff --git a/report-fossil.py b/report-fossil.py
index 9f7b7382f723bf02b3aaab5fd25b243897edaa0f..3c4b011b88761e1f3e2214c899fd88dcd1af19d8 100755
--- a/report-fossil.py
+++ b/report-fossil.py
@@ -126,7 +126,7 @@ statistics = [
     Statistic(internal_name='read_stalls', csv_names=['Read Stalls'], display_name='Read Stalls'),
 
     # Anv statistics
-    Statistic(internal_name='subgroup_size', csv_names=['Subgroup size'], display_name='Subgroup size'),
+    Statistic(internal_name='subgroup_size', csv_names=['Subgroup size'], display_name='Subgroup size', more_is_better=True),
     Statistic(internal_name='send_count', csv_names=['SEND Count'], display_name='Send messages'),
     Statistic(internal_name='loop_count', csv_names=['Loop Count'], display_name='Loop count'),
     Statistic(internal_name='cycle_count', csv_names=['Cycle Count'], display_name='Cycle count'),