diff --git a/src/util/omit.ts b/src/util/omit.ts
index fc8214e1..266ac980 100644
--- a/src/util/omit.ts
+++ b/src/util/omit.ts
@@ -2,10 +2,13 @@ export function omit(
   object: { [key: string]: any },
   keysToOmit: string[],
 ): { [key: string]: any } {
-  return Object.keys(object)
-    .filter((option) => !keysToOmit.includes(option))
-    .reduce((obj: { [key: string]: any }, key) => {
-      obj[key] = object[key];
-      return obj;
-    }, {});
+  const result: { [key: string]: any } = { __proto__: null };
+
+  for (const key of Object.keys(object)) {
+    if (keysToOmit.indexOf(key) === -1) {
+      result[key] = object[key];
+    }
+  }
+
+  return result;
 }