Make target unique
diff --git a/Doc/whatsnew/2.5.rst b/Doc/whatsnew/2.5.rst
index f0429ec..497c612 100644
--- a/Doc/whatsnew/2.5.rst
+++ b/Doc/whatsnew/2.5.rst
@@ -637,7 +637,7 @@
        print v.sqrt()
 
 
-.. _context-managers:
+.. _new-25-context-managers:
 
 Writing Context Managers
 ------------------------