diff --git a/plugins/providers/virtualbox/cap/configure_disks.rb b/plugins/providers/virtualbox/cap/configure_disks.rb
index ca26a4a0f..64efe4d7c 100644
--- a/plugins/providers/virtualbox/cap/configure_disks.rb
+++ b/plugins/providers/virtualbox/cap/configure_disks.rb
@@ -9,7 +9,7 @@ module VagrantPlugins
         LOGGER = Log4r::Logger.new("vagrant::plugins::virtualbox::configure_disks")
 
         # The max amount of disks that can be attached to a single device in a controller
-        MAX_DISK_NUMER = 30.freeze
+        MAX_DISK_NUMBER = 30.freeze
 
         # @param [Vagrant::Machine] machine
         # @param [VagrantPlugins::Kernel_V2::VagrantConfigDisk] defined_disks