diff --git a/src/open_inwoner/openzaak/admin.py b/src/open_inwoner/openzaak/admin.py
index 9df74ee3e1..c264783118 100644
--- a/src/open_inwoner/openzaak/admin.py
+++ b/src/open_inwoner/openzaak/admin.py
@@ -190,15 +190,13 @@ def process_file_view(self, request):
                         error_msg_iterator = ([msg] for msg in msgs_deduped)
 
                         error_msg_html = format_html_join(
-                            "\n", "<li>{}</li>", error_msg_iterator
+                            "\n", "<p> - {}</p>", error_msg_iterator
                         )
-                        error_msg_html_ordered = format_html(
+                        error_msg_html = format_html(
                             _("It was not possible to import the following items:")
-                            + f"<ol> {error_msg_html} </ol>"
-                        )
-                        self.message_user(
-                            request, error_msg_html_ordered, messages.ERROR
+                            + f"<div>{error_msg_html}</div>"
                         )
+                        self.message_user(request, error_msg_html, messages.ERROR)
 
                     return HttpResponseRedirect(
                         reverse(
diff --git a/src/open_inwoner/openzaak/import_export.py b/src/open_inwoner/openzaak/import_export.py
index 8eaea2414e..519bf36f26 100644
--- a/src/open_inwoner/openzaak/import_export.py
+++ b/src/open_inwoner/openzaak/import_export.py
@@ -43,14 +43,14 @@ def extract_error_data(cls, exc: Exception, jsonl: str):
         fields = data.get("fields", None)
         if source_config is CatalogusConfig:
             items = [
-                f"Domein = {fields['domein']}",
-                f"Rsin = {fields['rsin']}",
+                f"Domein = {fields['domein']!r}",
+                f"Rsin = {fields['rsin']!r}",
             ]
         if source_config is ZaakTypeConfig:
             items = [
-                f"Identificatie = {fields['identificatie']}",
-                f"Catalogus domein = {fields['catalogus'][0]}",
-                f"Catalogus rsin = {fields['catalogus'][1]}",
+                f"Identificatie = {fields['identificatie']!r}",
+                f"Catalogus domein = {fields['catalogus'][0]!r}",
+                f"Catalogus rsin = {fields['catalogus'][1]!r}",
             ]
         if source_config in {
             ZaakTypeStatusTypeConfig,
@@ -58,10 +58,10 @@ def extract_error_data(cls, exc: Exception, jsonl: str):
             ZaakTypeInformatieObjectTypeConfig,
         }:
             items = [
-                f"omschrijving = {fields['omschrijving']}",
-                f"ZaakTypeConfig identificatie = {fields['zaaktype_config'][0]}",
-                f"Catalogus domein = {fields['zaaktype_config'][1]}",
-                f"Catalogus rsin = {fields['zaaktype_config'][2]}",
+                f"omschrijving = {fields['omschrijving']!r}",
+                f"ZaakTypeConfig identificatie = {fields['zaaktype_config'][0]!r}",
+                f"Catalogus domein = {fields['zaaktype_config'][1]!r}",
+                f"Catalogus rsin = {fields['zaaktype_config'][2]!r}",
             ]
 
         return {
diff --git a/src/open_inwoner/openzaak/tests/test_admin.py b/src/open_inwoner/openzaak/tests/test_admin.py
index fe904f1630..90a49158b6 100644
--- a/src/open_inwoner/openzaak/tests/test_admin.py
+++ b/src/open_inwoner/openzaak/tests/test_admin.py
@@ -1,3 +1,4 @@
+import html
 import json
 from unittest import mock
 
@@ -280,39 +281,39 @@ def test_import_flow_reports_errors(self) -> None:
 
         response = form.submit().follow()
 
-        messages = [str(msg) for msg in response.context["messages"]]
+        messages = [html.unescape(str(msg)) for msg in response.context["messages"]]
         self.assertEqual(len(messages), 2)
         self.assertEqual(
             _("6 item(s) processed in total, with 6 failing row(s)."),
             messages[0],
         )
         self.assertIn(
-            "ZaakTypeConfig not found in target environment: Identificatie = ztc-id-a-0, "
-            "Catalogus domein = DM-0, Catalogus rsin = 123456789",
+            "ZaakTypeConfig not found in target environment: Identificatie = 'ztc-id-a-0', "
+            "Catalogus domein = 'DM-0', Catalogus rsin = '123456789'",
             messages[1],
         )
         self.assertIn(
-            "ZaakTypeStatusTypeConfig not found in target environment: omschrijving = status omschrijving, "
-            "ZaakTypeConfig identificatie = ztc-id-a-0, Catalogus domein = DM-0, Catalogus rsin = 123456789",
+            "ZaakTypeStatusTypeConfig not found in target environment: omschrijving = 'status omschrijving', "
+            "ZaakTypeConfig identificatie = 'ztc-id-a-0', Catalogus domein = 'DM-0', Catalogus rsin = '123456789'",
             messages[1],
         )
         self.assertIn(
-            "ZaakTypeStatusTypeConfig not found in target environment: omschrijving = bogus, ZaakTypeConfig "
-            "identificatie = ztc-id-a-0, Catalogus domein = DM-0, Catalogus rsin = 123456789",
+            "ZaakTypeStatusTypeConfig not found in target environment: omschrijving = 'bogus', ZaakTypeConfig "
+            "identificatie = 'ztc-id-a-0', Catalogus domein = 'DM-0', Catalogus rsin = '123456789'",
             messages[1],
         )
         self.assertIn(
-            "ZaakTypeInformatieObjectTypeConfig not found in target environment: omschrijving = informatieobject, "
-            "ZaakTypeConfig identificatie = ztc-id-a-0, Catalogus domein = DM-0, Catalogus rsin = 123456789",
+            "ZaakTypeInformatieObjectTypeConfig not found in target environment: omschrijving = 'informatieobject', "
+            "ZaakTypeConfig identificatie = 'ztc-id-a-0', Catalogus domein = 'DM-0', Catalogus rsin = '123456789'",
             messages[1],
         )
         self.assertIn(
-            "CatalogusConfig not found in target environment: Domein = DM-0, Rsin = 123456789",
+            "CatalogusConfig not found in target environment: Domein = 'DM-0', Rsin = '123456789'",
             messages[1],
         )
         self.assertIn(
-            "ZaakTypeResultaatTypeConfig not found in target environment: omschrijving = resultaat, "
-            "ZaakTypeConfig identificatie = ztc-id-a-0, Catalogus domein = DM-0, Catalogus rsin = 123456789",
+            "ZaakTypeResultaatTypeConfig not found in target environment: omschrijving = 'resultaat', "
+            "ZaakTypeConfig identificatie = 'ztc-id-a-0', Catalogus domein = 'DM-0', Catalogus rsin = '123456789'",
             messages[1],
         )
 
@@ -341,13 +342,13 @@ def test_import_flow_reports_partial_errors(self) -> None:
 
         response = form.submit().follow()
 
-        messages = [str(msg) for msg in response.context["messages"]]
+        messages = [html.unescape(str(msg)) for msg in response.context["messages"]]
         self.assertEqual(len(messages), 2)
         self.assertEqual(
             _("2 item(s) processed in total, with 1 failing row(s)."),
             messages[0],
         )
         self.assertEqual(
-            "It was not possible to import the following items:<ol> <li>ZaakTypeConfig not found in target environment: Identificatie = ztc-id-a-0, Catalogus domein = DM-0, Catalogus rsin = 123456789</li> </ol>",
+            "It was not possible to import the following items:<div><p> - ZaakTypeConfig not found in target environment: Identificatie = 'ztc-id-a-0', Catalogus domein = 'DM-0', Catalogus rsin = '123456789'</p></div>",
             messages[1],
         )
diff --git a/src/open_inwoner/openzaak/tests/test_import_export.py b/src/open_inwoner/openzaak/tests/test_import_export.py
index c950b825b3..50478d3e60 100644
--- a/src/open_inwoner/openzaak/tests/test_import_export.py
+++ b/src/open_inwoner/openzaak/tests/test_import_export.py
@@ -372,8 +372,8 @@ def test_import_jsonl_missing_statustype_config(self):
             )
         )
         expected_error = ZGWImportError(
-            "ZaakTypeStatusTypeConfig not found in target environment: omschrijving = bogus, "
-            "ZaakTypeConfig identificatie = ztc-id-a-0, Catalogus domein = DM-0, Catalogus rsin = 123456789"
+            "ZaakTypeStatusTypeConfig not found in target environment: omschrijving = 'bogus', "
+            "ZaakTypeConfig identificatie = 'ztc-id-a-0', Catalogus domein = 'DM-0', Catalogus rsin = '123456789'"
         )
         import_expected = dataclasses.asdict(
             CatalogusConfigImport(
@@ -418,8 +418,8 @@ def test_import_jsonl_update_statustype_config_missing_zt_config(self):
             )
         )
         expected_error = ZGWImportError(
-            "ZaakTypeStatusTypeConfig not found in target environment: omschrijving = status omschrijving, "
-            "ZaakTypeConfig identificatie = bogus, Catalogus domein = DM-1, Catalogus rsin = 666666666"
+            "ZaakTypeStatusTypeConfig not found in target environment: omschrijving = 'status omschrijving', "
+            "ZaakTypeConfig identificatie = 'bogus', Catalogus domein = 'DM-1', Catalogus rsin = '666666666'"
         )
         import_expected = dataclasses.asdict(
             CatalogusConfigImport(
@@ -464,8 +464,8 @@ def test_import_jsonl_update_reports_duplicates(self):
             )
         )
         expected_error = ZGWImportError(
-            "Got multiple results for ZaakTypeResultaatTypeConfig: omschrijving = resultaat, "
-            "ZaakTypeConfig identificatie = ztc-id-a-0, Catalogus domein = DM-0, Catalogus rsin = 123456789"
+            "Got multiple results for ZaakTypeResultaatTypeConfig: omschrijving = 'resultaat', "
+            "ZaakTypeConfig identificatie = 'ztc-id-a-0', Catalogus domein = 'DM-0', Catalogus rsin = '123456789'"
         )
         import_expected = dataclasses.asdict(
             CatalogusConfigImport(
@@ -509,10 +509,10 @@ def test_import_jsonl_fails_with_catalogus_domein_rsin_mismatch(self):
                 [
                     # error from trying to load existing CatalogusConfig
                     "ERROR:open_inwoner.openzaak.import_export:"
-                    "CatalogusConfig not found in target environment: Domein = BAR, Rsin = 987654321",
+                    "CatalogusConfig not found in target environment: Domein = 'BAR', Rsin = '987654321'",
                     # error from deserializing nested ZGW objects
                     "ERROR:open_inwoner.openzaak.import_export:"
-                    "ZaakTypeConfig not found in target environment: Identificatie = ztc-id-a-0, Catalogus domein = DM-0, Catalogus rsin = 123456789",
+                    "ZaakTypeConfig not found in target environment: Identificatie = 'ztc-id-a-0', Catalogus domein = 'DM-0', Catalogus rsin = '123456789'",
                 ],
             )