diff --git a/src/widget/numericalinterval/numericalinterval.js b/src/widget/numericalinterval/numericalinterval.js
index 58140077b3..f5badc6d07 100644
--- a/src/widget/numericalinterval/numericalinterval.js
+++ b/src/widget/numericalinterval/numericalinterval.js
@@ -425,8 +425,7 @@ BI.NumericalInterval = BI.inherit(BI.Single, {
         })
     },
 
-
-    isValid: function () {
+    isStateValid: function () {
         return this.options.validation === "valid";
     },