diff --git a/mps/manual/source/glossary/p.rst b/mps/manual/source/glossary/p.rst
index 052a5ca149b..4b21905ea01 100644
--- a/mps/manual/source/glossary/p.rst
+++ b/mps/manual/source/glossary/p.rst
@@ -510,7 +510,7 @@ Memory Management Glossary: P
         A region of :term:`memory (2)` is said to be protected if
         there is a :term:`barrier (1)` on that region.
 
-        .. opposite:: :term:`protected`
+        .. opposite:: :term:`unprotected`
 
     protection