diff --git a/lib/maca.c b/lib/maca.c
index 43fc4a264..0936eb3b0 100644
--- a/lib/maca.c
+++ b/lib/maca.c
@@ -461,7 +461,7 @@ void tx_packet(volatile packet_t *p) {
 	if(bit_is_set(*NIPEND, INT_NUM_MACA)) { *INTFRC = (1 << INT_NUM_MACA); } 
 	if(last_post == NO_POST) { *INTFRC = (1<<INT_NUM_MACA); }
 	/* if we are in a reception cycle, advance the softclock timeout to now */
-	if(last_post == RX_POST) { *MACA_SFTCLK = *MACA_CLK; }
+	if(last_post == RX_POST) { *MACA_SFTCLK = *MACA_CLK + CLK_PER_BYTE; }
 	return;
 }