diff --git a/doc/src/sgml/release-9.1.sgml b/doc/src/sgml/release-9.1.sgml
index d70c806fdad..7737381e798 100644
--- a/doc/src/sgml/release-9.1.sgml
+++ b/doc/src/sgml/release-9.1.sgml
@@ -62,7 +62,7 @@
standard; escape_string_warning>
has produced warnings about this usage for years. E''>
- strings are the proper way to embed escapes in strings and are
+ strings are the proper way to embed backslash escapes in strings and are
unaffected by this change.