diff --git a/lib/operations/mongo_client_ops.js b/lib/operations/mongo_client_ops.js
index 4116c2590f..d487018936 100644
--- a/lib/operations/mongo_client_ops.js
+++ b/lib/operations/mongo_client_ops.js
@@ -596,7 +596,7 @@ function validOptions(options) {
   const _validOptions = validOptionNames.concat(legacyOptionNames);
 
   for (const name in options) {
-    if (ignoreOptionNames.indexOf(name) !== -1) {
+    if (ignoreOptionNames.indexOf(name) !== -1 || !options.hasOwnProperty(name)) {
       continue;
     }