diff --git a/product/ERP5/spec/ERP5Form.spec b/product/ERP5/spec/ERP5Form.spec
index d96d55af78b032ae891143fecf0c3a5e8e4252d4..2e3d67ade50c67de7cdbc2e8a61986f06ad2f219 100644
--- a/product/ERP5/spec/ERP5Form.spec
+++ b/product/ERP5/spec/ERP5Form.spec
@@ -16,7 +16,7 @@ Source0:   %{product}-%{version}.tar.bz2
 BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-rootdir
 BuildArch: noarch
 Conflicts: ERP5Form
-Requires:  erp5-zope erp5-Formulator pdftk
+Requires:  erp5-zope erp5-Formulator pdftk pychart
 
 #----------------------------------------------------------------------
 %description