diff --git a/lib/guard/rails/runner.rb b/lib/guard/rails/runner.rb
index 6370ffc..3bfcdc6 100644
--- a/lib/guard/rails/runner.rb
+++ b/lib/guard/rails/runner.rb
@@ -42,7 +42,7 @@ module Guard
         '--pid', pid_file
       ]
 
-      rails_options << '-d' if options[:daemon]
+      rails_options << '-d' if options[:daemon] && !windows?
       rails_options << '-u' if options[:debugger]
       rails_options << options[:server] if options[:server]
 
diff --git a/spec/lib/guard/rails/runner_spec.rb b/spec/lib/guard/rails/runner_spec.rb
index 2e77931..2b361fe 100644
--- a/spec/lib/guard/rails/runner_spec.rb
+++ b/spec/lib/guard/rails/runner_spec.rb
@@ -40,7 +40,7 @@ describe Guard::RailsRunner do
       end
     end
 
-    context 'daemon' do
+    context 'daemon', :unless => RUBY_PLATFORM =~ /mswin|msys|mingw/ do
       let(:options) { default_options.merge(:daemon => true) }
 
       it "should have a daemon switch" do