diff --git a/lib/ChangeLog b/lib/ChangeLog
index 8554d50216..14897953d5 100644
--- a/lib/ChangeLog
+++ b/lib/ChangeLog
@@ -1,3 +1,8 @@
+2005-03-25  Jean-Marc Lasgouttes  <lasgouttes@lyx.org>
+
+	* layouts/revtex4.layout: indicate that the revtex4 class provides
+	natbib and url functionality.
+
 2005-03-22  Jean-Marc Lasgouttes  <lasgouttes@lyx.org>
 
 	* configure.m4: add a check to see whether TeX allows spaces in
diff --git a/lib/layouts/revtex4.layout b/lib/layouts/revtex4.layout
index 9fb81e7541..07929326e2 100644
--- a/lib/layouts/revtex4.layout
+++ b/lib/layouts/revtex4.layout
@@ -14,6 +14,8 @@ Columns			1
 Sides			1
 PageStyle		Headers
 MaxCounter		Counter_Section
+ProvidesNatbib		1
+ProvidesUrl		1
 
 # Default textclass options. The user may need to modify this.
 ClassOptions