diff --git a/src/web.rs b/src/web.rs
index dc8a926..07a956b 100644
--- a/src/web.rs
+++ b/src/web.rs
@@ -427,9 +427,10 @@ impl Service {
                            .ok_or_else(|| Error::new("no such camera".to_owned()))?;
             db.list_aggregated_recordings(camera.id, r, recording::Duration(i64::max_value()),
                                           |row| {
+                let end = row.ids.end - 1;  // in api, ids are inclusive.
                 out.recordings.push(json::Recording {
                     start_id: row.ids.start,
-                    end_id: if row.ids.end == row.ids.start + 1 { None } else { Some(row.ids.end) },
+                    end_id: if end == row.ids.start + 1 { None } else { Some(end) },
                     start_time_90k: row.time.start.0,
                     end_time_90k: row.time.end.0,
                     sample_file_bytes: row.sample_file_bytes,