diff --git a/Makefile b/Makefile
index 3888ef3..1234e93 100644
--- a/Makefile
+++ b/Makefile
@@ -427,7 +427,7 @@ bench-fork-score: bootstrap ## #000012 Phase 1b — score current bench output v
 	@mkdir -p bench/results
 	PYTHONUNBUFFERED=1 $(PY) -m bench.batteries.runner --all \
 	    --out $(FORK_CHILD)
-	$(ARBORIST) v8 score \
+	$(ARBORIST) substrate score \
 	    --parent $(FORK_PARENT) \
 	    --child $(FORK_CHILD) \
 	    --out $(FORK_REPORT)