diff --git a/doc/src/sgml/trigger.sgml b/doc/src/sgml/trigger.sgml
index a2ee283..2502296 100644
--- a/doc/src/sgml/trigger.sgml
+++ b/doc/src/sgml/trigger.sgml
@@ -526,7 +526,7 @@ typedef struct TriggerData
       <listitem>
        <para>
         A pointer to a structure describing the relation that the trigger fired for.
-        Look at <filename>utils/rel.h</> for details about
+        Look at <filename>utils/reltrigger.h</> for details about
         this structure.  The most interesting things are
         <literal>tg_relation-&gt;rd_att</> (descriptor of the relation
         tuples) and <literal>tg_relation-&gt;rd_rel-&gt;relname</>
@@ -573,7 +573,7 @@ typedef struct TriggerData
       <listitem>
        <para>
         A pointer to a structure of type <structname>Trigger</>,
-        defined in <filename>utils/rel.h</>:
+        defined in <filename>utils/reltrigger.h</>:
 
 <programlisting>
 typedef struct Trigger