diff --git a/plugins/bitcoin/slush_hashrate_ b/plugins/bitcoin/slush_hashrate_
index f2089f15..9201c917 100644
--- a/plugins/bitcoin/slush_hashrate_
+++ b/plugins/bitcoin/slush_hashrate_
@@ -1,34 +1,37 @@
-#!/usr/bin/python
-# based on https://github.com/pdbrown/munin-custom/blob/master/plugins/hashrate
-# improved by @deveth0 (donation to 1GzHgp9hsDRsf96MnVk2oo6EG1VmWP9jGs :) )
-# usage: link to slush_hashrate_YOURAPIKEY
-import sys
-import urllib2
-import json
-
-SLUSH_URL = 'https://mining.bitcoin.cz/accounts/profile/json/'
-API_KEY =  sys.argv[0][(sys.argv[0].rfind('_')+1):]
-SLUSH_STATS = SLUSH_URL + API_KEY
-
-mining_stats_raw = urllib2.urlopen(SLUSH_STATS)
-mining_stats = json.load(mining_stats_raw)
-workers = mining_stats['workers']
-
-command = ''
-if len(sys.argv) > 1:
-    command = sys.argv[1]
-
-if command == 'config':
-    print "graph_title Slush Hashrate"
-    print "graph_args --upper-limit 3000 -l 0"
-    print "graph_vlabel MHash/s"
-    print "graph_category Bitcoin"
-    for worker in workers:
-        label = worker.replace(".","_")
-        print label + ".label " +label
-    sys.exit(0)
-
-for worker in workers:
-        hash_rate = workers[worker]['hashrate']
-        label = worker.replace(".","_")
-        print label + ".value %d" % int(hash_rate)
+#!/usr/bin/python
+# based on https://github.com/pdbrown/munin-custom/blob/master/plugins/hashrate
+# improved by @deveth0 (donation to 1GzHgp9hsDRsf96MnVk2oo6EG1VmWP9jGs :) )
+# usage: set your api key in node-config, eg
+# [slush_*]
+# env.apikey foobar
+import sys
+import urllib2
+import json
+import os
+
+SLUSH_URL = 'https://mining.bitcoin.cz/accounts/profile/json/'
+API_KEY = os.getenv('apikey')
+SLUSH_STATS = SLUSH_URL + API_KEY
+
+mining_stats_raw = urllib2.urlopen(SLUSH_STATS)
+mining_stats = json.load(mining_stats_raw)
+workers = mining_stats['workers']
+
+command = ''
+if len(sys.argv) > 1:
+    command = sys.argv[1]
+
+if command == 'config':
+    print "graph_title Slush Hashrate"
+    print "graph_args --upper-limit 3000 -l 0"
+    print "graph_vlabel MHash/s"
+    print "graph_category Bitcoin"
+    for worker in workers:
+        label = worker.replace(".","_")
+        print label + ".label " +label
+    sys.exit(0)
+
+for worker in workers:
+        hash_rate = workers[worker]['hashrate']
+        label = worker.replace(".","_")
+        print label + ".value %d" % int(hash_rate)