diff --git a/plugins/puppet/puppetmaster b/plugins/puppet/puppetmaster
index b11aaf9e..5cc84cec 100755
--- a/plugins/puppet/puppetmaster
+++ b/plugins/puppet/puppetmaster
@@ -79,7 +79,7 @@ case ARGV[0]
 			puts "graph_title puppet clients usage"
 			puts "graph_vlabel clients"
 			puts "known_clients.label Known Clients"
-			puts "avg_compile.label Average configuration compile"
+			puts "avg_compile.label Average configuration compile, in seconds"
 			puts "last5m_count.label Clients in the last 5 minutes"
 			puts "last24h_unique_count.label unique clients in the last 24 hours"
 		end