diff --git a/ethosu/vela/test/testutil.py b/ethosu/vela/test/testutil.py
index 116afa4..68866fc 100644
--- a/ethosu/vela/test/testutil.py
+++ b/ethosu/vela/test/testutil.py
@@ -38,6 +38,7 @@
         global_memory_clock_scale=1.0,
         max_blockdep=0,
         softmax_support=True,
+        weight_estimation_scaling=1.0,
     )