diff --git a/providers/plugin.rb b/providers/plugin.rb
index b8ab15bc..b5d82f2a 100644
--- a/providers/plugin.rb
+++ b/providers/plugin.rb
@@ -39,7 +39,7 @@ def plugin_enabled?(name)
 action :enable do
   unless plugin_enabled?(new_resource.plugin)
     execute "rabbitmq-plugins enable #{new_resource.plugin}" do
-      umask 0022
+      umask '0022'
       Chef::Log.info "Enabling RabbitMQ plugin '#{new_resource.plugin}'."
       environment shell_environment.merge(
         'PATH' => "#{ENV['PATH']}:/usr/lib/rabbitmq/bin"
@@ -52,7 +52,7 @@ def plugin_enabled?(name)
 action :disable do
   if plugin_enabled?(new_resource.plugin)
     execute "rabbitmq-plugins disable #{new_resource.plugin}" do
-      umask 0022
+      umask '0022'
       Chef::Log.info "Disabling RabbitMQ plugin '#{new_resource.plugin}'."
       environment shell_environment.merge(
         'PATH' => "#{ENV['PATH']}:/usr/lib/rabbitmq/bin"