diff --git a/files/ganglia/puppetd_runtime.sh b/files/ganglia/puppetd_runtime.sh
index b935304..4e7af0a 100644
--- a/files/ganglia/puppetd_runtime.sh
+++ b/files/ganglia/puppetd_runtime.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env ruby
+#!/usr/bin/env bash
 
 # plot puppetd last runtime