diff --git a/vendors/knockout/src/subscribables/dependentObservable.js b/vendors/knockout/src/subscribables/dependentObservable.js
index b79ec8f55..cbd9ba6b5 100644
--- a/vendors/knockout/src/subscribables/dependentObservable.js
+++ b/vendors/knockout/src/subscribables/dependentObservable.js
@@ -25,8 +25,8 @@ ko.computed = (evaluatorFunctionOrOptions, options) => {
         pure: false,
         isSleeping: false,
         readFunction: options["read"],
-        disposeWhenNodeIsRemoved: options["disposeWhenNodeIsRemoved"] || options.disposeWhenNodeIsRemoved || null,
-        disposeWhen: options["disposeWhen"] || options.disposeWhen,
+        disposeWhenNodeIsRemoved: options.disposeWhenNodeIsRemoved,
+        disposeWhen: options.disposeWhen,
         domNodeDisposalCallback: null,
         dependencyTracking: {},
         dependenciesCount: 0,