diff --git a/manifests/dbfile.pp b/manifests/dbfile.pp
index c816f96..744810c 100644
--- a/manifests/dbfile.pp
+++ b/manifests/dbfile.pp
@@ -50,9 +50,9 @@
   } else {
 
     exec { "${postmap} ${title}":
-      cwd         => $postfixdir,
-      subscribe   => File["${postfixdir}/${title}"],
-      refreshonly => true,
+      cwd       => $postfixdir,
+      subscribe => File["${postfixdir}/${title}"],
+      creates   => "${postfixdir}/${title}.db".
       # No need to notify the service, since it detects changed files
     }