diff --git a/doc/src/sgml/spi.sgml b/doc/src/sgml/spi.sgml
index 72e1a813cb..5d1f56d9d9 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>