diff --git a/README.md b/README.md
index c7d3bac..49c8ddc 100644
--- a/README.md
+++ b/README.md
@@ -46,6 +46,7 @@ graphs in a single run.
 [haproxyng*]
 env.socket /path/to/socket
 env.clean prefix-
+env.PATH /usr/sbin:/usr/bin:/sbin:/bin:/usr/local/bin:/usr/local/sbin
 ```
 
 `haproxyng` takes two environmental options:
@@ -58,6 +59,8 @@ env.clean prefix-
     generated and everything is prefixed with "staging-" or "production_" then
     put that (or any other regex) into `clean` and it will be cleaned from any
     titles before being output to Munin.
+  * `PATH` define path here if perl cannot be found in your standard path defined
+    by your OS.
 
 Beyond that, copy/symlink it to the `plugins/` directory on the relevant node
 and wait for it to run. Running
diff --git a/haproxyng b/haproxyng
index a7d3599..f728221 100755
--- a/haproxyng
+++ b/haproxyng
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 # haproxyng Munin Plugin
 # Multigraph plugin which monitors the haproxy service.