diff --git a/xml/System.Collections.Generic/SortedSet`1.xml b/xml/System.Collections.Generic/SortedSet`1.xml
index de582fb7971..700cce8bb07 100644
--- a/xml/System.Collections.Generic/SortedSet`1.xml
+++ b/xml/System.Collections.Generic/SortedSet`1.xml
@@ -95,6 +95,8 @@
       <format type="text/markdown"><![CDATA[  
   
 ## Remarks  
+ Does NOT store duplicate value. For example: if you want to have a stored list of 3, 4, 4, 1 it will generate a list 1, 3, 4.
+
  A <xref:System.Collections.Generic.SortedSet%601> object maintains a sorted order without affecting performance as elements are inserted and deleted. Duplicate elements are not allowed. Changing the sort values of existing items is not supported and may lead to unexpected behavior.  
   
  For a thread safe alternative to <xref:System.Collections.Generic.SortedSet%601>, see <xref:System.Collections.Immutable.ImmutableSortedSet%601>