diff --git a/toxcore/group.c b/toxcore/group.c
index 1cab134b..e0938472 100644
--- a/toxcore/group.c
+++ b/toxcore/group.c
@@ -1782,7 +1782,7 @@ static unsigned int lossy_packet_not_received(Group_c *g, int peer_index, uint16
         return 0;
     }
 
-    if ((uint16_t)(message_number - g->group[peer_index].bottom_lossy_number) <= MAX_LOSSY_COUNT) {
+    if ((uint16_t)(message_number - g->group[peer_index].bottom_lossy_number) < MAX_LOSSY_COUNT) {
         if (g->group[peer_index].recv_lossy[message_number % MAX_LOSSY_COUNT]) {
             return 1;
         }
@@ -1807,8 +1807,7 @@ static unsigned int lossy_packet_not_received(Group_c *g, int peer_index, uint16
     if (top_distance < MAX_LOSSY_COUNT) {
         unsigned int i;
 
-        for (i = g->group[peer_index].bottom_lossy_number + 1;
-                i != (g->group[peer_index].bottom_lossy_number + top_distance + 1);
+        for (i = g->group[peer_index].bottom_lossy_number; i != (g->group[peer_index].bottom_lossy_number + top_distance);
                 ++i) {
             g->group[peer_index].recv_lossy[i % MAX_LOSSY_COUNT] = 0;
         }