diff --git a/lib/redmine/export/pdf.rb b/lib/redmine/export/pdf.rb
index 94c75c55f..68cc19c67 100644
--- a/lib/redmine/export/pdf.rb
+++ b/lib/redmine/export/pdf.rb
@@ -111,8 +111,8 @@ module Redmine
           Cell(w, h, fix_text_encoding(txt), border, ln, align, fill, link)
         end
 
-        def RDMMultiCell(w,h=0,txt='',border=0,align='',fill=0)
-          MultiCell(w,h,fix_text_encoding(txt),border,align,fill)
+        def RDMMultiCell(w, h=0, txt='', border=0, align='', fill=0, ln=1)
+          MultiCell(w, h, fix_text_encoding(txt), border, align, fill, ln)
         end
 
         def Footer