diff --git a/crates/caldav/src/calendar/methods/report/calendar_query/elements.rs b/crates/caldav/src/calendar/methods/report/calendar_query/elements.rs
index 0404394..8a8857d 100644
--- a/crates/caldav/src/calendar/methods/report/calendar_query/elements.rs
+++ b/crates/caldav/src/calendar/methods/report/calendar_query/elements.rs
@@ -42,6 +42,7 @@ pub struct FilterElement {
 }
 
 impl FilterElement {
+    #[must_use]
     pub fn matches(&self, cal_object: &CalendarObject) -> bool {
         cal_object.matches(&self.comp_filter)
     }