diff --git a/doc/src/sgml/filelist.sgml b/doc/src/sgml/filelist.sgml
index 1e82cb2d3d..40ef5f7ffc 100644
--- a/doc/src/sgml/filelist.sgml
+++ b/doc/src/sgml/filelist.sgml
@@ -148,7 +148,7 @@
 <!ENTITY pgsurgery       SYSTEM "pgsurgery.sgml">
 <!ENTITY pgtrgm          SYSTEM "pgtrgm.sgml">
 <!ENTITY pgvisibility    SYSTEM "pgvisibility.sgml">
-<!ENTITY pgwalinspect 	 SYSTEM "pgwalinspect.sgml">
+<!ENTITY pgwalinspect    SYSTEM "pgwalinspect.sgml">
 <!ENTITY postgres-fdw    SYSTEM "postgres-fdw.sgml">
 <!ENTITY seg             SYSTEM "seg.sgml">
 <!ENTITY contrib-spi     SYSTEM "contrib-spi.sgml">