diff --git a/tests/e2e/test_mobile_week_ahead_release.py b/tests/e2e/test_mobile_week_ahead_release.py
index 30a3082..ed653d8 100644
--- a/tests/e2e/test_mobile_week_ahead_release.py
+++ b/tests/e2e/test_mobile_week_ahead_release.py
@@ -110,6 +110,21 @@ def test_release_artifact_plans_seven_touch_safe_mobile_dates(
                 f"DTEND:{tomorrow}T110000\r\nRRULE:FREQ=DAILY;COUNT=3\r\n"
                 f"EXDATE:{excluded}T100000\r\nEND:VEVENT\r\nEND:VCALENDAR"
             )
+            unsupported_title = "Private monthly board review"
+            unsupported_calendar = (
+                "BEGIN:VCALENDAR\r\nVERSION:2.0\r\nBEGIN:VEVENT\r\n"
+                f"SUMMARY:{unsupported_title}\r\nDTSTART:{tomorrow}T100000\r\n"
+                f"DTEND:{tomorrow}T110000\r\nRRULE:FREQ=MONTHLY;BYDAY=1FR\r\n"
+                "END:VEVENT\r\nEND:VCALENDAR"
+            )
+            page.locator("#week-capacity-file").set_input_files({
+                "name": "unsupported.ics", "mimeType": "text/calendar", "buffer": unsupported_calendar.encode()
+            })
+            expect(page.locator("#week-capacity-status")).to_contain_text(
+                "1 recurring event could not be counted"
+            )
+            expect(page.locator("#apply-week-capacities")).to_be_disabled()
+            expect(capacity_import).not_to_contain_text(unsupported_title)
             page.locator("#week-capacity-file").set_input_files({
                 "name": "availability.ics", "mimeType": "text/calendar", "buffer": calendar.encode()
             })