diff --git a/locales/rn/de.json b/locales/rn/de.json
index 7c8e1686..9cce5e08 100644
--- a/locales/rn/de.json
+++ b/locales/rn/de.json
@@ -78,6 +78,7 @@
       "clear_title": "Alle Termine entfernen?",
       "delete_description": "Der Kalender und alle seine Termine werden gelöscht. Dies kann nicht rückgängig gemacht werden.",
       "delete_title": "Kalender löschen?",
+      "description_field": "Beschreibung",
       "description_placeholder": "Optional",
       "edit_calendar": "Kalender bearbeiten",
       "new_calendar": "Neuer Kalender"
diff --git a/locales/rn/en.json b/locales/rn/en.json
index fb90bce8..a819ca55 100644
--- a/locales/rn/en.json
+++ b/locales/rn/en.json
@@ -99,6 +99,7 @@
       "custom_color": "Custom color (hex)",
       "delete_description": "The calendar and all of its events will be deleted. This cannot be undone.",
       "delete_title": "Delete calendar?",
+      "description_field": "Description",
       "description_placeholder": "Optional",
       "edit_calendar": "Edit calendar",
       "fewer_colors": "Fewer colors",
diff --git a/src/components/calendar/CalendarEditSheet.tsx b/src/components/calendar/CalendarEditSheet.tsx
index 67d9f5c3..2c1fcf94 100644
--- a/src/components/calendar/CalendarEditSheet.tsx
+++ b/src/components/calendar/CalendarEditSheet.tsx
@@ -307,9 +307,11 @@ export function CalendarEditSheet({ visible, calendar, onSave, onClose }: Calend
                     ))}
                   </View>
                 )}
-                <Text style={styles.label}>{t('calendar.management.description', 'Description')}</Text>
+                {/* Not calendar.management.description: in the webmail's
+                    catalog that is the management page's desktop help text. */}
+                <Text style={styles.label}>{t('calendar.management.description_field', 'Description')}</Text>
                 <TextInput
-                  accessibilityLabel={t('calendar.management.description', 'Description')}
+                  accessibilityLabel={t('calendar.management.description_field', 'Description')}
                   value={description}
                   onChangeText={setDescription}
                   placeholder={t('calendar.management.description_placeholder', 'Optional')}
diff --git a/src/components/calendar/__tests__/calendar-edit-description-label.test.ts b/src/components/calendar/__tests__/calendar-edit-description-label.test.ts
new file mode 100644
index 00000000..996edc86
--- /dev/null
+++ b/src/components/calendar/__tests__/calendar-edit-description-label.test.ts
@@ -0,0 +1,29 @@
+import { describe, expect, it } from 'vitest';
+import fs from 'node:fs';
+import path from 'node:path';
+
+const root = path.resolve(__dirname, '../../../..');
+const source = fs.readFileSync(path.resolve(__dirname, '../CalendarEditSheet.tsx'), 'utf8');
+const catalog = (file: string) => JSON.parse(fs.readFileSync(path.join(root, file), 'utf8'));
+const common = catalog('locales/en/common.json');
+const overlay = catalog('locales/rn/en.json');
+
+function lookup(tree: Record<string, unknown>, key: string): unknown {
+  return key.split('.').reduce<unknown>((node, part) => (node as Record<string, unknown> | undefined)?.[part], tree);
+}
+
+// The app reads the overlay over the webmail's catalog.
+const english = (key: string) => (lookup(overlay, key) ?? lookup(common, key)) as string | undefined;
+
+describe('the calendar sheet’s description field', () => {
+  it('is named "Description", not by the webmail’s desktop help text', () => {
+    const before = source.slice(0, source.indexOf('value={description}'));
+    const input = before.slice(before.lastIndexOf('<TextInput'));
+    const key = input.match(/accessibilityLabel=\{t\('([^']+)'/)?.[1];
+    expect(key).toBeTruthy();
+    expect(english(key!)).toBe('Description');
+
+    const labels = [...before.matchAll(/<Text style=\{styles\.label\}>\{t\('([^']+)'/g)];
+    expect(english(labels[labels.length - 1][1])).toBe('Description');
+  });
+});