diff --git a/resources/file.rb b/resources/file.rb
index 7b3a99d..6d76721 100644
--- a/resources/file.rb
+++ b/resources/file.rb
@@ -26,5 +26,5 @@
 
 # Require attributes
 attribute :path,    kind_of: String, name_attribute: true
-attribute :size,    kind_of: Fixnum, required: true
+attribute :size,    kind_of: Fixnum
 attribute :persist, kind_of: [TrueClass, FalseClass], default: false