diff --git a/index.json b/index.json
index 20e0d378..e6298db5 100644
--- a/index.json
+++ b/index.json
@@ -418,7 +418,7 @@
             "negative": "Not available"
           },
           "condition": {
-            "exists": true
+            "minLength": 1
           },
           "points": 10
         }