diff --git a/_overviews/collections-2.13/concrete-mutable-collection-classes.md b/_overviews/collections-2.13/concrete-mutable-collection-classes.md
index f2cf39eb41..9ddd1242ef 100644
--- a/_overviews/collections-2.13/concrete-mutable-collection-classes.md
+++ b/_overviews/collections-2.13/concrete-mutable-collection-classes.md
@@ -81,7 +81,8 @@ Scala provides mutable queues in addition to immutable ones. You use a `mQueue`
 
 ## Stacks
 
-You saw immutable stacks earlier. There is also a mutable version, supported by class [mutable.Stack](http://www.scala-lang.org/api/{{ site.scala-version }}/scala/collection/mutable/Stack.html). It works exactly the same as the immutable version except that modifications happen in place.
+A stack implements a data structure which allows to store and retrieve objects in a last-in-first-out (LIFO) fashion.
+It is supported by class [mutable.Stack](http://www.scala-lang.org/api/{{ site.scala-version }}/scala/collection/mutable/Stack.html).
 
     scala> val stack = new scala.collection.mutable.Stack[Int]           
     stack: scala.collection.mutable.Stack[Int] = Stack()