diff --git a/packages/core-js/modules/es.string.starts-with.js b/packages/core-js/modules/es.string.starts-with.js
index 14a590482f4d..f09b809362aa 100644
--- a/packages/core-js/modules/es.string.starts-with.js
+++ b/packages/core-js/modules/es.string.starts-with.js
@@ -8,16 +8,18 @@ var correctIsRegExpLogic = require('../internals/correct-is-regexp-logic');
 var nativeStartsWith = ''.startsWith;
 var min = Math.min;
 
-// `String.prototype.startsWith` method
-// https://tc39.github.io/ecma262/#sec-string.prototype.startswith
-$({ target: 'String', proto: true, forced: !correctIsRegExpLogic('startsWith') }, {
-  startsWith: function startsWith(searchString /* , position = 0 */) {
-    var that = String(requireObjectCoercible(this));
-    notARegExp(searchString);
-    var index = toLength(min(arguments.length > 1 ? arguments[1] : undefined, that.length));
-    var search = String(searchString);
-    return nativeStartsWith
-      ? nativeStartsWith.call(that, search, index)
-      : that.slice(index, index + search.length) === search;
-  }
-});
+if(Object.getOwnPropertyDescriptor(String.prototype, "startsWith").configurable) {
+  // `String.prototype.startsWith` method
+  // https://tc39.github.io/ecma262/#sec-string.prototype.startswith
+  $({ target: 'String', proto: true, forced: !correctIsRegExpLogic('startsWith') }, {
+    startsWith: function startsWith(searchString /* , position = 0 */) {
+      var that = String(requireObjectCoercible(this));
+      notARegExp(searchString);
+      var index = toLength(min(arguments.length > 1 ? arguments[1] : undefined, that.length));
+      var search = String(searchString);
+      return nativeStartsWith
+        ? nativeStartsWith.call(that, search, index)
+        : that.slice(index, index + search.length) === search;
+    }
+  });
+}