diff --git a/source/sources/ics_feed.php b/source/sources/ics_feed.php
index 711c824..fb1b7b5 100644
--- a/source/sources/ics_feed.php
+++ b/source/sources/ics_feed.php
@@ -159,10 +159,32 @@ class class_source_ics_feed
 			case 200:
 			{
 				$ics = $response->getBody();
-				$vcalendar = \davina\helpers\ics\vcalendar_decode($ics);
-				$calendar = $this->vcalendar_to_calendar($vcalendar, $realm_name);
-				$calendar_raw = \davina\model\calendar_to_raw($calendar);
-				return $calendar_raw;
+				try
+				{
+					$vcalendar = \davina\helpers\ics\vcalendar_decode($ics);
+				}
+				catch (\Throwable $throwable)
+				{
+					\error_log(
+						\davina\helpers\string_\coin(
+							'could not parse ics: {{reason}}',
+							[
+								'reason' => \strval($throwable),
+							]
+						)
+					);
+					$valendar = null;
+				}
+				if ($vcalendar === null)
+				{
+					throw (new \Exception('could not parse ics'));
+				}
+				else
+				{
+					$calendar = $this->vcalendar_to_calendar($vcalendar, $realm_name);
+					$calendar_raw = \davina\model\calendar_to_raw($calendar);
+					return $calendar_raw;
+				}
 				break;
 			}
 			default: