diff --git a/lib/phantomjs/platform.rb b/lib/phantomjs/platform.rb
index c35f281..bb5a11e 100644
--- a/lib/phantomjs/platform.rb
+++ b/lib/phantomjs/platform.rb
@@ -138,7 +138,7 @@ def package_url
     class Win32 < Platform
       class << self
         def useable?
-          host_os.include?('mingw32') and architecture.include?('i686')
+          !!(host_os =~ /mingw|mswin|cygwin/)
         end
 
         def platform
@@ -156,6 +156,12 @@ def phantomjs_path
         def package_url
           'https://bitbucket.org/ariya/phantomjs/downloads/phantomjs-2.1.1-windows.zip'
         end
+        
+        def system_phantomjs_path
+          `where phantomjs`.delete("\n")[0]
+        rescue
+        end
+        
       end
     end
   end
diff --git a/spec/platform_spec.rb b/spec/platform_spec.rb
index ac3fd44..11399fc 100644
--- a/spec/platform_spec.rb
+++ b/spec/platform_spec.rb
@@ -170,7 +170,7 @@
     describe "with system install" do
       before(:each) do
         Phantomjs::Platform.stub(:system_phantomjs_version).and_return(Phantomjs.version)
-        Phantomjs::Platform.stub(:system_phantomjs_path).and_return("#{ENV['TEMP']}/path")
+        Phantomjs::Platform::Win32.stub(:system_phantomjs_path).and_return("#{ENV['TEMP']}/path")
       end
 
       it "returns the correct phantom js executable path for the platform" do