diff --git a/vendors/knockout/src/binding/defaultBindings/options.js b/vendors/knockout/src/binding/defaultBindings/options.js
index 08d2e516f..216cae839 100644
--- a/vendors/knockout/src/binding/defaultBindings/options.js
+++ b/vendors/knockout/src/binding/defaultBindings/options.js
@@ -63,7 +63,7 @@ ko.bindingHandlers['options'] = {
         }
 
         if (unwrappedArray) {
-            if (typeof unwrappedArray.length == "undefined") // Coerce single value into array
+            if (!Array.isArray(unwrappedArray)) // Coerce single value into array
                 unwrappedArray = [unwrappedArray];
 
             // Filter out any entries marked as destroyed
diff --git a/vendors/knockout/src/binding/editDetection/arrayToDomNodeChildren.js b/vendors/knockout/src/binding/editDetection/arrayToDomNodeChildren.js
index 37af3ce61..c687e344f 100644
--- a/vendors/knockout/src/binding/editDetection/arrayToDomNodeChildren.js
+++ b/vendors/knockout/src/binding/editDetection/arrayToDomNodeChildren.js
@@ -47,7 +47,7 @@
 
     ko.utils.setDomNodeChildrenFromArrayMapping = (domNode, array, mapping, options, callbackAfterAddingNodes, editScript) => {
         array = array || [];
-        if (typeof array.length == "undefined") // Coerce single value into array
+        if (!Array.isArray(array)) // Coerce single value into array
             array = [array];
 
         options = options || {};