diff --git a/src/api/client/sync/v5.rs b/src/api/client/sync/v5.rs
index 4751fd84..c61987f9 100644
--- a/src/api/client/sync/v5.rs
+++ b/src/api/client/sync/v5.rs
@@ -286,6 +286,7 @@ where
 		let ranges = list.ranges.clone();
 		for mut range in ranges {
 			range.0 = uint!(0);
+			range.1 = range.1.checked_add(uint!(1)).unwrap_or(range.1);
 			range.1 = range
 				.1
 				.clamp(range.0, UInt::try_from(active_rooms.len()).unwrap_or(UInt::MAX));