diff --git a/lib/fog/azure/compute.rb b/lib/fog/azure/compute.rb
index 08834cd..dd17e8f 100644
--- a/lib/fog/azure/compute.rb
+++ b/lib/fog/azure/compute.rb
@@ -72,7 +72,8 @@ def initialize(options={})
       class Real
         def initialize(options)
           begin
-            require "azure"
+            require 'azure'
+            require 'azure/core'
           rescue LoadError => e
             retry if require("rubygems")
             raise e.message