diff --git a/lib/redmine/export/pdf.rb b/lib/redmine/export/pdf.rb
index d83e34a57..e1134c505 100644
--- a/lib/redmine/export/pdf.rb
+++ b/lib/redmine/export/pdf.rb
@@ -18,7 +18,6 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 require 'iconv'
-require 'rfpdf/fpdf'
 require 'fpdf/chinese'
 require 'fpdf/japanese'
 require 'fpdf/korean'