diff --git a/Rakefile b/Rakefile
index 7806316..ab03a96 100644
--- a/Rakefile
+++ b/Rakefile
@@ -44,7 +44,7 @@ namespace :doc do
 
   desc "Remove generated documenation"
   task :clean do
-    rm_r doc_destination if File.exists?(doc_destination)
+    rm_r doc_destination if File.exist?(doc_destination)
   end
 
 end
diff --git a/spec/zuora/api_spec.rb b/spec/zuora/api_spec.rb
index 4b8bbf6..5247b94 100644
--- a/spec/zuora/api_spec.rb
+++ b/spec/zuora/api_spec.rb
@@ -9,7 +9,7 @@
     end
 
     it "has readable WSDL" do
-      File.exists?(Zuora::Api::WSDL).should be
+      File.exist?(Zuora::Api::WSDL).should be
     end
 
     it "can be configured to use sandbox" do