diff --git a/app/views/reports/customer/index.xls.erb b/app/views/reports/customer/index.xls.erb
index 9ebfe63a..5d4b4f30 100644
--- a/app/views/reports/customer/index.xls.erb
+++ b/app/views/reports/customer/index.xls.erb
@@ -61,7 +61,7 @@
                   <%if member_group[0].nil?%>
                     <td colspan="10"> <b>Group Type : Normal</b></td>
                   <%else%>
-                    <td colspan="10"> <b>Group Type : <%= Lookup.where(:lookup_type=>'membership_type', :value=>member_group[0]).last.name %></b></td>
+                    <td colspan="10"> <b>Group Type : <%= Lookup.where(:lookup_type=>'membership_type', :value=>member_group[0]).last.name rescue '-'%></b></td>
                   <%end%>
                 </tr>
               </thead>