Index: vhosts/conf.d/yonah.conf
===================================================================
--- vhosts/conf.d/heartsafe.mit.edu.conf	(revision 132)
+++ vhosts/conf.d/yonah.conf	(revision 156)
@@ -11,4 +11,6 @@
 	DocumentRoot /afs/athena.mit.edu/user/y/o/yonah/web_scripts
 	SuExecUserGroup yonah yonah
+	<IfModule mod_ssl.c>
 	SSLEngine on
+	</IfModule>
 </VirtualHost>