diff --git a/doc/src/sgml/datatype.sgml b/doc/src/sgml/datatype.sgml
index 02763b58e6c..a5e03c6fc99 100644
--- a/doc/src/sgml/datatype.sgml
+++ b/doc/src/sgml/datatype.sgml
@@ -351,7 +351,7 @@
         <entry><type>bigint</></entry>
         <entry>8 bytes</entry>
         <entry>large-range integer</entry>
-        <entry>-9223372036854775808 to 9223372036854775807</entry>
+        <entry>-9223372036854775808 to +9223372036854775807</entry>
        </row>
 
        <row>