diff --git a/manifests/server.pp b/manifests/server.pp
index 0c847f8..729d706 100644
--- a/manifests/server.pp
+++ b/manifests/server.pp
@@ -70,7 +70,11 @@
     if $ssl_database_password == undef {
       fail('ssl_database_passowrd must be set')
     }
-    if $::operatingsystem == 'Fedora' and is_integer($::operatingsystemrelease) and $::operatingsystemrelease <= 19 {
+    if (( $::operatingsystem == 'Fedora' and
+        is_integer($::operatingsystemrelease) and
+        $::operatingsystemrelease <= 19 ) or
+        ( $::operatingsystem in ['RedHat', 'Centos', 'Scientific'] and
+        $::operatingsystemrelease < 7 )) {
       package { $ssl_package_name:
         ensure => $ssl_package_ensure,
         before => Nssdb::Create['qpidd'],