diff --git a/lib/rules/jsx-no-useless-fragment.js b/lib/rules/jsx-no-useless-fragment.js
index 8489aeb1bf..684278237d 100644
--- a/lib/rules/jsx-no-useless-fragment.js
+++ b/lib/rules/jsx-no-useless-fragment.js
@@ -77,8 +77,8 @@ module.exports = {
 
       return (
         node.children.length -
-        Number(isPaddingSpaces(node.children[0])) -
-        Number(isPaddingSpaces(node.children[node.children.length - 1]))
+        (+isPaddingSpaces(node.children[0])) -
+        (+isPaddingSpaces(node.children[node.children.length - 1]))
       ) < 2;
     }