diff --git a/clamav/manifests/init.pp b/clamav/manifests/init.pp
index 88c1563..92ae554 100644
--- a/clamav/manifests/init.pp
+++ b/clamav/manifests/init.pp
@@ -6,15 +6,31 @@
 #     $update:
 #         Set to false to disable automatic virus database updates.
 #
-class clamav($update="true") {
+class clamav($update=true) {
 
     package { "clamav":
         ensure => installed,
     }
 
-    if $update == false {
-        file { "/etc/cron.daily/freshclam":
-            ensure => absent,
+    case $::operatingsystem {
+        "centos","redhat": {
+            if (versioncmp($::operatingsystemrelease, 7) < 0) {
+                if (!$update) {
+                    file { "/etc/cron.daily/freshclam":
+                        ensure => absent,
+                    }
+                }
+            } else {
+                package { "clamav-update":
+                    ensure => $update ? {
+                        true  => "present",
+                        false => "absent",
+                    }
+                }
+            }
+        }
+        default: {
+            fail("clamav module not supported on ${::operatingsystem}")
         }
     }