diff --git a/lib/redmine_qbo/patches/pdf_patch.rb b/lib/redmine_qbo/patches/pdf_patch.rb
index f45d998..8566e93 100644
--- a/lib/redmine_qbo/patches/pdf_patch.rb
+++ b/lib/redmine_qbo/patches/pdf_patch.rb
@@ -260,8 +260,9 @@ module RedmineQbo
 
           # Check to see if there is an estimate attached, then combine them
           if issue.estimate
+            e_pdf, ref = EstimatePdfService.new(qbo: QboConnectionService.current!).fetch_pdf(doc_ids: [issue.estimate.id])
             pdf = CombinePDF.parse(pdf.output, allow_optional_content: true)
-            pdf << CombinePDF.parse(issue.estimate.pdf)
+            pdf << CombinePDF.parse(e_pdf)
             return pdf.to_pdf
           end