diff --git a/batik.spec b/batik.spec
index a558d9c..6e28fca 100644
--- a/batik.spec
+++ b/batik.spec
@@ -70,7 +70,7 @@ purposes, such as viewing, generation or manipulation.
 
 %package css
 Summary:        Batik CSS engine
-Obsoletes:      %{name} = 1.8-0.15.svn1230816
+Obsoletes:      %{name} < 1.8-0.17.svn1230816
 
 %description css
 CSS component of the Apache Batik SVG manipulation and rendering library.