diff --git a/app/src/main/java/org/mozilla/fenix/ext/BookmarkNode.kt b/app/src/main/java/org/mozilla/fenix/ext/BookmarkNode.kt
index 46c9319d4..2152f3fb8 100644
--- a/app/src/main/java/org/mozilla/fenix/ext/BookmarkNode.kt
+++ b/app/src/main/java/org/mozilla/fenix/ext/BookmarkNode.kt
@@ -15,9 +15,6 @@ val Context.bookmarkStorage: PlacesBookmarksStorage
  * Removes [children] from [BookmarkNode.children] and returns the new modified [BookmarkNode].
  */
 operator fun BookmarkNode.minus(children: Set<BookmarkNode>): BookmarkNode {
-    return this.copy(children = this.children?.filter { filtered ->
-        children.none {
-            it.guid == filtered.guid
-        }
-    })
+    val removedChildrenGuids = children.map { it.guid }.toSet()
+    return this.copy(children = this.children?.filterNot { removedChildrenGuids.contains(it.guid) })
 }