diff --git a/apps/webapp/app/v3/querySchemas.ts b/apps/webapp/app/v3/querySchemas.ts
index c1ef99ae0..7f3850c2e 100644
--- a/apps/webapp/app/v3/querySchemas.ts
+++ b/apps/webapp/app/v3/querySchemas.ts
@@ -246,6 +246,7 @@ export const runsSchema: TableSchema = {
         description: "Error information",
         example: '{"message": "Task failed"}',
       }),
+      expression: "if(error = '{}', NULL, error)",
     },
 
     // Tags & versions