diff --git a/app/controllers/vouchers_controller.rb b/app/controllers/vouchers_controller.rb
index 84bb25b..991d797 100644
--- a/app/controllers/vouchers_controller.rb
+++ b/app/controllers/vouchers_controller.rb
@@ -5,7 +5,7 @@ class VouchersController < ApplicationController
   # GET /vouchers
   def index
     @vouchers = Voucher.all
-    whitelist = system 'mcrcon -c -H mine.vereto.net -p #{ENV["MC_RCON_PASS"]} "whitelist list" | sed "s/There are*.*whitelisted players: //g"'.gsub("\n", "").split(", ")
+    whitelist = %x[mcrcon -c -H mine.vereto.net -p #{ENV["MC_RCON_PASS"]} 'whitelist list' | sed 's/There are*.*whitelisted players: //g'].gsub("\n", "").split(", ")
 
     render json: { :vouchers => @vouchers, :whitelist => whitelist }.to_json
   end
diff --git a/log/development.log b/log/development.log
index f74e93d..6159b4f 100644
--- a/log/development.log
+++ b/log/development.log
@@ -2338,3 +2338,39 @@ Processing by VouchersController#index as */*
 Completed 200 OK in 111ms (Views: 0.1ms | ActiveRecord: 1.1ms | Allocations: 6058)
 
 
+Started GET "/vouchers" for ::1 at 2019-10-08 22:17:10 +0200
+   (0.5ms)  SET  @@SESSION.sql_mode = CONCAT(CONCAT(@@sql_mode, ',STRICT_ALL_TABLES'), ',NO_AUTO_VALUE_ON_ZERO'),  @@SESSION.sql_auto_is_null = 0, @@SESSION.wait_timeout = 2147483
+   (0.2ms)  SELECT `schema_migrations`.`version` FROM `schema_migrations` ORDER BY `schema_migrations`.`version` ASC
+Processing by VouchersController#index as */*
+Completed 500 Internal Server Error in 8ms (ActiveRecord: 0.0ms | Allocations: 768)
+
+
+  
+NoMethodError (undefined method `gsub' for true:TrueClass):
+  
+app/controllers/vouchers_controller.rb:8:in `index'
+Started GET "/vouchers" for ::1 at 2019-10-08 22:17:16 +0200
+Processing by VouchersController#index as */*
+Completed 500 Internal Server Error in 10ms (ActiveRecord: 0.0ms | Allocations: 125)
+
+
+  
+NoMethodError (undefined method `gsub' for true:TrueClass):
+  
+app/controllers/vouchers_controller.rb:8:in `index'
+Started GET "/vouchers" for ::1 at 2019-10-08 22:18:54 +0200
+Processing by VouchersController#index as */*
+Completed 500 Internal Server Error in 5ms (ActiveRecord: 0.0ms | Allocations: 719)
+
+
+  
+NoMethodError (undefined method `gsub' for true:TrueClass):
+  
+app/controllers/vouchers_controller.rb:9:in `index'
+Started GET "/vouchers" for ::1 at 2019-10-08 22:19:17 +0200
+Processing by VouchersController#index as */*
+  Voucher Load (0.3ms)  SELECT `vouchers`.* FROM `vouchers`
+  ↳ app/controllers/vouchers_controller.rb:10:in `index'
+Completed 200 OK in 122ms (Views: 0.2ms | ActiveRecord: 1.4ms | Allocations: 6017)
+
+