diff --git a/CHANGELOG.md b/CHANGELOG.md
index 77bdabcbe..985a72818 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,6 @@
 ## 0.6.6 (unreleased)
 
+  - Fix port collision handling with greater than two VMs. [GH-185]
   - Fix potential infinite loop with root path if bad CWD is given to environment.
 
 ## 0.6.5 (October 8, 2010)
diff --git a/lib/vagrant/action/vm/forward_ports.rb b/lib/vagrant/action/vm/forward_ports.rb
index d8a59e472..4f6ba1d6b 100644
--- a/lib/vagrant/action/vm/forward_ports.rb
+++ b/lib/vagrant/action/vm/forward_ports.rb
@@ -34,7 +34,7 @@ module Vagrant
         def external_collision_check
           existing = used_ports
           @env.env.config.vm.forwarded_ports.each do |name, options|
-            if existing.include?(options[:hostport].to_s)
+            if existing.include?(options[:hostport].to_i)
               handle_collision(name, options, existing)
             end
           end
diff --git a/lib/vagrant/action/vm/forward_ports_helpers.rb b/lib/vagrant/action/vm/forward_ports_helpers.rb
index 5204237a0..495f21919 100644
--- a/lib/vagrant/action/vm/forward_ports_helpers.rb
+++ b/lib/vagrant/action/vm/forward_ports_helpers.rb
@@ -14,7 +14,7 @@ module Vagrant
             if vm.running? && vm.uuid != @env["vm"].uuid
               vm.network_adapters.collect do |na|
                 na.nat_driver.forwarded_ports.collect do |fp|
-                  fp.hostport.to_s
+                  fp.hostport.to_i
                 end
               end
             end
diff --git a/test/vagrant/action/vm/forward_ports_helpers_test.rb b/test/vagrant/action/vm/forward_ports_helpers_test.rb
index d4aefcabc..d234bcd2d 100644
--- a/test/vagrant/action/vm/forward_ports_helpers_test.rb
+++ b/test/vagrant/action/vm/forward_ports_helpers_test.rb
@@ -64,7 +64,7 @@ class ForwardPortsHelpersVMActionTest < Test::Unit::TestCase
       na.stubs(:nat_driver).returns(ne)
       ne.stubs(:forwarded_ports).returns(fps)
       @vms << mock_vm(:network_adapters => [na])
-      assert_equal %W[2222 80], @instance.used_ports
+      assert_equal [2222, 80], @instance.used_ports
     end
   end
 end
diff --git a/test/vagrant/action/vm/forward_ports_test.rb b/test/vagrant/action/vm/forward_ports_test.rb
index 31378443a..406bad6c6 100644
--- a/test/vagrant/action/vm/forward_ports_test.rb
+++ b/test/vagrant/action/vm/forward_ports_test.rb
@@ -53,12 +53,12 @@ class ForwardPortsVMActionTest < Test::Unit::TestCase
     end
 
     should "not raise any errors if no forwarded ports collide" do
-      @used_ports << "80"
+      @used_ports << 80
       assert_nothing_raised { @klass.new(@app, @env) }
     end
 
     should "handle collision if it happens" do
-      @used_ports << "2222"
+      @used_ports << 2222
       @klass.any_instance.expects(:handle_collision).with("ssh", anything, anything).once
       assert_nothing_raised { @klass.new(@app, @env) }
     end