diff --git a/doc/src/sgml/libpq.sgml b/doc/src/sgml/libpq.sgml
index 0305ab0f0bf..a67cfbf1cc1 100644
--- a/doc/src/sgml/libpq.sgml
+++ b/doc/src/sgml/libpq.sgml
@@ -3706,7 +3706,7 @@ char *PQescapeLiteral(PGconn *conn, const char *str, size_t length);
      </tip>
 
      <para>
-      Note that it is not necessary nor correct to do escaping when a data
+      Note that it is neither necessary nor correct to do escaping when a data
       value is passed as a separate parameter in <function>PQexecParams</> or
       its sibling routines.
      </para>