diff --git a/doc/src/sgml/spi.sgml b/doc/src/sgml/spi.sgml
index 72e1a813cbb935c97b7f43c9be985e1641b6e4c0..5d1f56d9d98a125dcb463650274dc7b38651cea0 100644
--- a/doc/src/sgml/spi.sgml
+++ b/doc/src/sgml/spi.sgml
@@ -1693,7 +1693,7 @@ Input tuple description
 </VARLISTENTRY>
 <VARLISTENTRY>
 <TERM>
-char * <REPLACEABLE CLASS="PARAMETER">fnumber</REPLACEABLE>
+int <REPLACEABLE CLASS="PARAMETER">fnumber</REPLACEABLE>
 </TERM>
 <LISTITEM>
 <PARA>