diff --git a/calendar/renderer.php b/calendar/renderer.php
index 3693953d85b..2c356347dc6 100644
--- a/calendar/renderer.php
+++ b/calendar/renderer.php
@@ -300,9 +300,8 @@ class core_calendar_renderer extends plugin_renderer_base {
      */
     public function render_no_calendar_subscriptions(): string {
         $output = html_writer::start_div('mt-5');
-        $importlink = html_writer::link((new moodle_url('/calendar/import.php', calendar_get_export_import_link_params()))->out(),
-                get_string('importcalendarexternal', 'calendar'));
-        $output .= get_string('nocalendarsubscriptions', 'calendar', $importlink);
+        $importlink = (new moodle_url('/calendar/import.php', calendar_get_export_import_link_params()))->out();
+        $output .= get_string('nocalendarsubscriptionsimportexternal', 'core_calendar', $importlink);
         $output .= html_writer::end_div();
 
         return $output;
@@ -329,7 +328,8 @@ class core_calendar_renderer extends plugin_renderer_base {
         $table->id = 'subscription_details_table';
 
         if (empty($subscriptions)) {
-            $cell = new html_table_cell(get_string('nocalendarsubscriptions', 'calendar'));
+            $importlink = (new moodle_url('/calendar/import.php', calendar_get_export_import_link_params()))->out();
+            $cell = new html_table_cell(get_string('nocalendarsubscriptionsimportexternal', 'core_calendar', $importlink));
             $cell->colspan = 5;
             $table->data[] = new html_table_row(array($cell));
         }
diff --git a/lang/en/calendar.php b/lang/en/calendar.php
index f922d5d46d9..694efe548bf 100644
--- a/lang/en/calendar.php
+++ b/lang/en/calendar.php
@@ -168,7 +168,6 @@ $string['eventtypeuser'] = 'user';
 $string['hideeventtype'] = 'Hide {$a} events';
 $string['showeventtype'] = 'Show {$a} events';
 $string['hourly'] = 'Hourly';
-$string['importcalendarexternal'] = 'Import an external calendar?';
 $string['importcalendar'] = 'Import calendar';
 $string['importcalendarheading'] = 'Import calendar...';
 $string['importcalendarfrom'] = 'Import from';
@@ -193,9 +192,9 @@ $string['namewithsource'] = '{$a->name} ({$a->source})';
 $string['never'] = 'Never';
 $string['newevent'] = 'New event';
 $string['newmonthannouncement'] = 'Calendar is now set to {$a}.';
+$string['nocalendarsubscriptionsimportexternal'] = 'No calendar subscriptions yet. <a href="{$a}">Import an external calendar</a>';
 $string['notitle'] = 'no title';
 $string['noupcomingevents'] = 'There are no upcoming events';
-$string['nocalendarsubscriptions'] = 'No calendar subscriptions yet. Do you want to {$a}';
 $string['oneevent'] = '1 event';
 $string['pollinterval'] = 'Update interval';
 $string['pollinterval_help'] = 'How often you would like the calendar to update with new events.';
@@ -287,3 +286,7 @@ $string['yoursubscriptions'] = 'Imported calendars';
 
 // Deprecated since Moodle 4.4.
 $string['coursecalendar'] = '{$a} calendar';
+
+// Deprecated since Moodle 4.5.
+$string['importcalendarexternal'] = 'Import an external calendar?';
+$string['nocalendarsubscriptions'] = 'No calendar subscriptions yet. Do you want to {$a}';
diff --git a/lang/en/deprecated.txt b/lang/en/deprecated.txt
index 31c9828e288..b934616128d 100644
--- a/lang/en/deprecated.txt
+++ b/lang/en/deprecated.txt
@@ -113,4 +113,6 @@ coursesearch_help,core
 blocknotexist,core_debug
 modulenotexist,core_debug
 coursecalendar,core_calendar
+importcalendarexternal,core_calendar
+nocalendarsubscriptions,core_calendar
 datechanged,core