diff --git a/tests/arch/ecp5/bug1630.ys b/tests/arch/ecp5/bug1630.ys
index b419fb9bb..63df1ad5b 100644
--- a/tests/arch/ecp5/bug1630.ys
+++ b/tests/arch/ecp5/bug1630.ys
@@ -1,2 +1,2 @@
 read_ilang bug1630.il.gz
-abc9 -lut +/ecp5/abc9_5g.lut
+abc9 -lut 4