diff --git a/lib/vagrant/plugin/manager.rb b/lib/vagrant/plugin/manager.rb
index 8023fbea3..456e7c6ee 100644
--- a/lib/vagrant/plugin/manager.rb
+++ b/lib/vagrant/plugin/manager.rb
@@ -114,7 +114,13 @@ module Vagrant
       #
       # @return [Hash]
       def installed_plugins
-        system = @system_file ? @system_file.installed_plugins : {}
+        system = {}
+        if @system_file
+          @system_file.installed_plugins.each do |k, v|
+            system[k] = v.merge("system" => true)
+          end
+        end
+
         system.merge(@user_file.installed_plugins)
       end
 
diff --git a/test/unit/vagrant/plugin/manager_test.rb b/test/unit/vagrant/plugin/manager_test.rb
index 104466e25..d9f38d0e1 100644
--- a/test/unit/vagrant/plugin/manager_test.rb
+++ b/test/unit/vagrant/plugin/manager_test.rb
@@ -214,7 +214,9 @@ describe Vagrant::Plugin::Manager do
           expect(plugins.length).to eql(2)
           expect(plugins).to have_key("foo")
           expect(plugins["foo"]["gem_version"]).to eq("0.1.0")
+          expect(plugins["foo"]["system"]).to be_false
           expect(plugins).to have_key("bar")
+          expect(plugins["bar"]["system"]).to be_true
         end
       end
     end