diff --git a/doc/src/sgml/ref/create_index.sgml b/doc/src/sgml/ref/create_index.sgml
index 43583df54d5..bfde61ee6c7 100644
--- a/doc/src/sgml/ref/create_index.sgml
+++ b/doc/src/sgml/ref/create_index.sgml
@@ -1,5 +1,5 @@
@@ -77,7 +77,7 @@ CREATE [ UNIQUE ] INDEX name ON
- Indexes can not be used with IS NULL> clauses by default.
+ Indexes are not used for IS NULL> clauses by default.
The best way to use indexes in such cases is to create a partial index
using an IS NULL> comparison.