diff --git a/warnings/refs-must-have-owner.md b/warnings/refs-must-have-owner.md
index 59a953df5..2fca7ff99 100644
--- a/warnings/refs-must-have-owner.md
+++ b/warnings/refs-must-have-owner.md
@@ -4,8 +4,14 @@ layout: single
 permalink: warnings/refs-must-have-owner.html
 ---
 
-You are probably here because you got the following error messages:
+You are probably here because you got one of the following error messages:
 
+*React 16.0.0+*
+> Warning:
+>
+> Element ref was specified as a string (myRefName) but no owner was set. You may have multiple copies of React loaded. (details: https://fb.me/react-refs-must-have-owner).
+
+*earlier versions of React*
 > Warning:
 >
 > addComponentAsRefTo(...): Only a ReactOwner can have refs. You might be adding a ref to a component that was not created inside a component's `render` method, or you have multiple copies of React loaded.