diff --git a/eclipse.spec b/eclipse.spec
index 77f3cde..26802cf 100644
--- a/eclipse.spec
+++ b/eclipse.spec
@@ -538,6 +538,12 @@ JASPERVERSION=$(ls plugins | grep org.apache.jasper_ | \
 rm plugins/org.apache.jasper_*.jar
 ln -s %{_datadir}/eclipse/plugins/org.apache.jasper_* \
    plugins/org.apache.jasper_$JASPERVERSION
+ls -l %{_datadir}/eclipse/plugins/org.apache.jasper_*
+unzip -l %{_datadir}/eclipse/plugins/org.apache.jasper_*
+unzip %{_datadir}/eclipse/plugins/org.apache.jasper_*.jar \
+META-INF/MANIFEST.MF
+cat META-INF/MANIFEST.MF
+exit 1
 
 # link to servlet-api
 SERVLETAPIVERSION=$(ls plugins | grep javax.servlet_ | \