diff --git a/nagios/manifests/target.pp b/nagios/manifests/target.pp
index f5fa5af..f01d77c 100644
--- a/nagios/manifests/target.pp
+++ b/nagios/manifests/target.pp
@@ -525,7 +525,7 @@ define nagios::target::nrpe::service($source=undef,
         $description = $service
     }
 
-    if $source {
+    if $source and !defined(File["${nagios::common::libdir}/${binary}"]) {
         file { "${nagios::common::libdir}/${binary}":
             ensure  => present,
             source  => $source,