diff --git a/plugins/kernel_v2/config/vm.rb b/plugins/kernel_v2/config/vm.rb
index 4d64aace6..a016cd3a0 100644
--- a/plugins/kernel_v2/config/vm.rb
+++ b/plugins/kernel_v2/config/vm.rb
@@ -726,14 +726,11 @@ module VagrantPlugins
         errors = _detected_errors
 
         if @allow_fstab_modification == UNSET_VALUE
-          plugins = Vagrant.plugin("2").manager.synced_folders
           machine.synced_folders.types.each do |impl_name|
             inst = machine.synced_folders.type(impl_name)
-            if inst.capability?(:default_fstab_modification)
-              if inst.capability(:default_fstab_modification) == false
-                @allow_fstab_modification = false
-                break
-              end
+            if inst.capability?(:default_fstab_modification) && inst.capability(:default_fstab_modification) == false
+              @allow_fstab_modification = false
+              break
             end
           end
           @allow_fstab_modification = true if @allow_fstab_modification == UNSET_VALUE