diff --git a/lib/seed-fu/writer.rb b/lib/seed-fu/writer.rb
index 44740be..b99b076 100644
--- a/lib/seed-fu/writer.rb
+++ b/lib/seed-fu/writer.rb
@@ -1,10 +1,14 @@
 module SeedFu
   class Writer
-    def initialize(options = {})
-      @options = options
-      @options[:chunk_size]  ||= 100
-      @options[:constraints] ||= [:id]
+    cattr_accessor :default_options
+    @@default_options = {
+      :chunk_size  => 100,
+      :constraints => [:id],
+      :seed_type   => :seed
+    }
 
+    def initialize(options = {})
+      @options = self.class.default_options.merge(options)
       raise ArgumentError, "missing option :class_name" unless @options[:class_name]
     end
 
@@ -76,7 +80,7 @@ def file_footer
 
       def seed_header
         constraints = @options[:constraints] && @options[:constraints].map(&:inspect).join(', ')
-        "#{@options[:class_name]}.seed(#{constraints}"
+        "#{@options[:class_name]}.#{@options[:seed_type]}(#{constraints}"
       end
 
       def seed_footer
diff --git a/spec/writer_spec.rb b/spec/writer_spec.rb
index c552039..1a57753 100644
--- a/spec/writer_spec.rb
+++ b/spec/writer_spec.rb
@@ -6,7 +6,7 @@
   end
 
   after do
-    FileUtils.rm(@file_name)
+    #FileUtils.rm(@file_name)
   end
 
   it "should successfully write some seeds out to a file and then import them back in" do
@@ -14,7 +14,6 @@
       writer << { :id => 1, :title => "Mr" }
       writer << { :id => 2, :title => "Dr" }
     end
-
     load @file_name
 
     SeededModel.find(1).title.should == "Mr"
@@ -27,10 +26,20 @@
       writer << { :id => 2, :title => "Dr" }
       writer << { :id => 3, :title => "Dr" }
     end
-
     load @file_name
 
     SeededModel.count.should == 3
     File.read(@file_name).should include("# BREAK EVAL\n")
   end
+
+  it "should support specifying the output to use 'seed_once' rather than 'seed'" do
+    SeededModel.seed(:id => 1, :title => "Dr")
+
+    SeedFu::Writer.write(@file_name, :class_name => 'SeededModel', :seed_type => :seed_once) do |writer|
+      writer << { :id => 1, :title => "Mr" }
+    end
+    load @file_name
+
+    SeededModel.find(1).title.should == "Dr"
+  end
 end