diff --git a/pingstat.py b/pingstat.py
index 5da5697..7467f65 100644
--- a/pingstat.py
+++ b/pingstat.py
@@ -107,7 +107,7 @@ async def tombstone(self, evt: StateEvent) -> None:
     # region Getting pong data
 
     def iter_pongs(self, room_id: RoomID, max_age: int = WEEK, min_age: int = 0,
-                   max_diff: int = 10 * MINUTE, min_diff: int = 10) -> Iterable[Pong]:
+                   max_diff: int = 10 * MINUTE, min_diff: int = 1) -> Iterable[Pong]:
         now = int(time() * 1000)
         rows = self.database.execute(self.pong.select().where(and_(
             self.pong.c.room_id == room_id,