diff --git a/config/linkcheckerrc b/config/linkcheckerrc
index f4feb6d0..8791d381 100644
--- a/config/linkcheckerrc
+++ b/config/linkcheckerrc
@@ -131,7 +131,7 @@
 #recursionlevel=1
 # supply a regular expression for which warnings are printed if found
 # in any HTML files.
-#warningregex=Oracle DB Error
+#warningregex=(Oracle DB Error|Page Not Found)
 # Basic NNTP server. Overrides NNTP_SERVER environment variable.
 # warn if size info exceeds given maximum of bytes
 #warnsizebytes=2000
diff --git a/doc/changelog.txt b/doc/changelog.txt
index cc674f0a..3e8dca54 100644
--- a/doc/changelog.txt
+++ b/doc/changelog.txt
@@ -12,6 +12,8 @@ Changes:
   scrolling down.
 - gui: Display release date in about dialog.
   Closes: SF bug #3297255
+- doc: Improved warningregex example in default configuration file.
+  Closes: SF bug #3297254
 
 Features:
 - gui: Add syntax highlighting for Qt editor in case QScintilla