diff --git a/odoo/addons/base/models/ir_actions_report.py b/odoo/addons/base/models/ir_actions_report.py
index 41fa44addc0..0f89cb31082 100644
--- a/odoo/addons/base/models/ir_actions_report.py
+++ b/odoo/addons/base/models/ir_actions_report.py
@@ -652,7 +652,7 @@ class IrActionsReport(models.Model):
             try:
                 reader = PdfFileReader(stream)
                 writer.appendPagesFromReader(reader)
-            except (PdfReadError, TypeError, NotImplementedError):
+            except (PdfReadError, TypeError, NotImplementedError, ValueError):
                 raise UserError(_("Odoo is unable to merge the generated PDFs."))
         result_stream = io.BytesIO()
         streams.append(result_stream)