diff --git a/doc/src/sgml/libpgtcl.sgml b/doc/src/sgml/libpgtcl.sgml
index c42f0988108..3fa6c57055b 100644
--- a/doc/src/sgml/libpgtcl.sgml
+++ b/doc/src/sgml/libpgtcl.sgml
@@ -1316,7 +1316,7 @@ invoke the SQL NOTIFY statement using <FUNCTION>pg_exec</FUNCTION>.
 
 <!-- ********************************************************** -->
 
-<REFENTRY ID="PGTCL-PGON_CONNECTION_LOSS">
+<REFENTRY ID="PGTCL-PGON-CONNECTION-LOSS">
 <REFMETA>
 <REFENTRYTITLE>pg_on_connection_loss</REFENTRYTITLE>
 <REFMISCINFO>PGTCL - Asynchronous Notify</REFMISCINFO>
@@ -1327,8 +1327,8 @@ invoke the SQL NOTIFY statement using <FUNCTION>pg_exec</FUNCTION>.
 <REFPURPOSE>set or change a callback for unexpected connection loss
 </REFPURPOSE>
 <INDEXTERM
-ID="IX-PGTCL-PGON_CONNECTION_LOSS-1"><PRIMARY>pgtcl</PRIMARY><SECONDARY>connection loss</SECONDARY></INDEXTERM>
-<INDEXTERM ID="IX-PGTCL-PGON_CONNECTION_LOSS-2"><PRIMARY>connection loss</PRIMARY></INDEXTERM>
+ID="IX-PGTCL-PGON-CONNECTION-LOSS-1"><PRIMARY>pgtcl</PRIMARY><SECONDARY>connection loss</SECONDARY></INDEXTERM>
+<INDEXTERM ID="IX-PGTCL-PGON-CONNECTION-LOSS-2"><PRIMARY>connection loss</PRIMARY></INDEXTERM>
 </REFNAMEDIV>
 <REFSYNOPSISDIV>
 <REFSYNOPSISDIVINFO>
@@ -1338,7 +1338,7 @@ ID="IX-PGTCL-PGON_CONNECTION_LOSS-1"><PRIMARY>pgtcl</PRIMARY><SECONDARY>connecti
 pg_on_connection_loss <REPLACEABLE CLASS="PARAMETER">dbHandle</REPLACEABLE> <REPLACEABLE CLASS="PARAMETER">callbackCommand</REPLACEABLE>
 </SYNOPSIS>
 
-<REFSECT2 ID="R2-PGTCL-PGON_CONNECTION_LOSS-1">
+<REFSECT2 ID="R2-PGTCL-PGON-CONNECTION-LOSS-1">
 <REFSECT2INFO>
 <DATE>2002-09-02</DATE>
 </REFSECT2INFO>
@@ -1367,7 +1367,7 @@ when connection loss is detected.
 </VARIABLELIST>
 </REFSECT2>
 
-<REFSECT2 ID="R2-PGTCL-PGON_CONNECTION_LOSS-2">
+<REFSECT2 ID="R2-PGTCL-PGON-CONNECTION-LOSS-2">
 <REFSECT2INFO>
 <DATE>2002-09-02</DATE>
 </REFSECT2INFO>
@@ -1387,7 +1387,7 @@ when connection loss is detected.
 </REFSECT2>
 </REFSYNOPSISDIV>
 
-<REFSECT1 ID="R1-PGTCL-PGON_CONNECTION_LOSS-1">
+<REFSECT1 ID="R1-PGTCL-PGON-CONNECTION-LOSS-1">
 <REFSECT1INFO>
 <DATE>2002-09-02</DATE>
 </REFSECT1INFO>