diff --git a/src/databricks/labs/ucx/queries/assessment/main/00_0_compatibility.sql b/src/databricks/labs/ucx/queries/assessment/main/00_0_compatibility.sql
index 7f79faf145..07897beff7 100644
--- a/src/databricks/labs/ucx/queries/assessment/main/00_0_compatibility.sql
+++ b/src/databricks/labs/ucx/queries/assessment/main/00_0_compatibility.sql
@@ -1,7 +1,7 @@
 -- viz type=counter, name=Workspace UC readiness, counter_label=UC readiness, value_column=readiness
 -- widget row=1, col=0, size_x=1, size_y=3
 WITH raw AS (
-  SELECT object_type, object_id, IF(failures == '[]', 1, 0) AS ready 
+  SELECT object_type, object_id, IF(failures == '[]', 1, 0) AS ready
   FROM $inventory.objects
 )
-SELECT CONCAT(ROUND(SUM(ready) / COUNT(*) * 100, 1), '%') AS readiness FROM raw
+SELECT COALESCE(CONCAT(ROUND(SUM(ready) / COUNT(*) * 100, 1), '%'), 'N/A') AS readiness FROM raw