diff --git a/lib/prawn/blank/appearance.rb b/lib/prawn/blank/appearance.rb
index 3be1826..de73c62 100755
--- a/lib/prawn/blank/appearance.rb
+++ b/lib/prawn/blank/appearance.rb
@@ -345,7 +345,7 @@ def radio_on_down(element)
 
     # For DA instead of AP
     def text_field_default_appearance(element)
-      text_style = element.text_style ||= Prawn::TextStyle(@document,"Helvetica",10,'000000')
+      text_style = element.text_style ||= Prawn::TextStyle(@document,"Helvetica", :normal, 10,'000000')
 
       # Set border width to 0, don't add any borders by default
       element.border_style ||= Prawn::BorderStyle(@document, 0)