diff --git a/glassfish-activation.spec b/glassfish-activation.spec
index 5782bbb..7c78b6b 100644
--- a/glassfish-activation.spec
+++ b/glassfish-activation.spec
@@ -29,6 +29,7 @@ BuildRequires:  ant
 BuildRequires:  fdupes
 BuildRequires:  javapackages-local
 Obsoletes:      jaf
+Obsoletes:      gnu-jaf
 BuildArch:      noarch
 
 %description
@@ -40,6 +41,8 @@ bean to perform the operation(s).
 
 %package api
 Summary:        JavaBeans Activation Framework API jar
+Obsoletes:      jaf
+Obsoletes:      gnu-jaf
 
 %description api
 The JavaBeans Activation Framework (JAF) is a standard extension to the