diff --git a/clamav/manifests/init.pp b/clamav/manifests/init.pp
index 21c613e..0dda0fe 100644
--- a/clamav/manifests/init.pp
+++ b/clamav/manifests/init.pp
@@ -1,12 +1,23 @@
 
 # Install Clam AntiVirus
 #
-class clamav {
+# === Parameters
+#
+#     $update:
+#         Set to false to disable automatic virus database updates.
+#
+class clamav($update="true") {
 
     package { "clamav":
         ensure => installed,
     }
 
+    if $update == false {
+        file { "/etc/cron.daily/freshclam":
+            ensure => absent,
+        }
+    }
+
 }