diff --git a/impl/src/main.c b/impl/src/main.c
index 09d0680..8707a0e 100644
--- a/impl/src/main.c
+++ b/impl/src/main.c
@@ -261,7 +261,7 @@ int main(int argc, char **argv)
 
 				// ** Modulate packet **
 
-				RESULT_CHECK(layer1_tx_add_packet_to_burst(&tx, packetbuf, ret));
+				RESULT_CHECK(layer1_tx_add_packet_to_burst(&tx, packetbuf, ret + crc_size));
 				RESULT_CHECK(layer1_tx_finalize_burst(&tx));
 
 				size_t burst_len = layer1_tx_get_sample_count(&tx);