diff --git a/report_qweb_encrypt/models/ir_actions_report.py b/report_qweb_encrypt/models/ir_actions_report.py
index 8114c7f0b8..1313688136 100644
--- a/report_qweb_encrypt/models/ir_actions_report.py
+++ b/report_qweb_encrypt/models/ir_actions_report.py
@@ -33,6 +33,8 @@ def _render_qweb_pdf(self, report_ref, res_ids=None, data=None):
         )
         report_sudo = self._get_report(report_ref)
         if res_ids:
+            if isinstance(res_ids, int):
+                res_ids = [res_ids]
             encrypt_password = self.env.context.get("encrypt_password")
             report = self._get_report_from_name(report_sudo.report_name).with_context(
                 encrypt_password=encrypt_password
diff --git a/report_qweb_encrypt/tests/test_report_qweb_encrypt.py b/report_qweb_encrypt/tests/test_report_qweb_encrypt.py
index 2095531c1d..d99a53c118 100644
--- a/report_qweb_encrypt/tests/test_report_qweb_encrypt.py
+++ b/report_qweb_encrypt/tests/test_report_qweb_encrypt.py
@@ -40,12 +40,12 @@ def test_report_qweb_manual_encrypt(self):
         report.encrypt = "manual"
 
         # If no encrypt_password, still not encrypted
-        pdf, _ = report.with_context(**ctx)._render_qweb_pdf(report.report_name, [1])
+        pdf, _ = report.with_context(**ctx)._render_qweb_pdf(report.report_name, 1)
         self.assertFalse(pdf.count(b"/Encrypt"))
 
         # Valid python string for password
         ctx.update({"encrypt_password": "secretcode"})
-        pdf, _ = report.with_context(**ctx)._render_qweb_pdf(report.report_name, [1])
+        pdf, _ = report.with_context(**ctx)._render_qweb_pdf(report.report_name, 1)
         self.assertTrue(pdf.count(b"/Encrypt"))
 
     # TODO: test_report_qweb_manual_encrypt, require JS test?