diff --git a/src/ssb.ebt.c b/src/ssb.ebt.c
index 83d77d68..7ec5ce2d 100644
--- a/src/ssb.ebt.c
+++ b/src/ssb.ebt.c
@@ -137,13 +137,13 @@ void tf_ssb_ebt_receive_clock(tf_ssb_ebt_t* ebt, JSContext* context, JSValue clo
 				{
 					if (sequence < 0)
 					{
-						entry->in = -1;
+						entry->in = tf_max(entry->in, -1);
 						entry->in_replicate = false;
 						entry->in_receive = false;
 					}
 					else
 					{
-						entry->in = sequence >> 1;
+						entry->in = tf_max(entry->in, sequence >> 1);
 						entry->in_replicate = true;
 						entry->in_receive = (sequence & 1) == 0;
 					}