diff --git a/new-lamassu-admin/src/pages/Services/schemas/blockcypher.js b/new-lamassu-admin/src/pages/Services/schemas/blockcypher.js
index 5d7d178b..e65d5ae8 100644
--- a/new-lamassu-admin/src/pages/Services/schemas/blockcypher.js
+++ b/new-lamassu-admin/src/pages/Services/schemas/blockcypher.js
@@ -43,7 +43,8 @@ export default {
         .required('The token is required'),
       confidenceFactor: Yup.number('The confidence factor must be a number')
         .integer('The confidence factor must be an integer')
-        .positive('The confidence factor must be positive')
+        .min(0, 'The confidence factor must be non-negative')
+        .max(100, 'The confidence factor must be less than or equal to 100')
         .required('The confidence factor is required')
     })
   }