diff --git a/telegram/utils.go b/telegram/utils.go
index 937ca8b..7cb2b01 100644
--- a/telegram/utils.go
+++ b/telegram/utils.go
@@ -759,7 +759,9 @@ func (c *Client) mucCacheHasOccupant(mucID int64, memberID int64) bool {
 	}
 
 	occupant, ok := mucState.Occupants.Get(memberID)
-	mucState.Occupants.Bump(occupant)
+	if ok {
+		mucState.Occupants.Bump(occupant)
+	}
 	return ok
 }