diff --git a/app/Classes/Protocol/EMSI.php b/app/Classes/Protocol/EMSI.php
index e9c8798..92a68c2 100644
--- a/app/Classes/Protocol/EMSI.php
+++ b/app/Classes/Protocol/EMSI.php
@@ -908,7 +908,7 @@ final class EMSI extends BaseProtocol implements CRCInterface,ZmodemInterface
 		}
 
 		$this->client->rx_purge();
-		$this->client->buffer_clear();
+		$this->client->tx_purge();
 		$this->emsi_banner();
 
 		$t1 = $this->client->timer_set(self::EMSI_HSTIMEOUT);
diff --git a/app/Classes/Protocol/Zmodem.php b/app/Classes/Protocol/Zmodem.php
index 0b59664..9c067e5 100644
--- a/app/Classes/Protocol/Zmodem.php
+++ b/app/Classes/Protocol/Zmodem.php
@@ -2389,7 +2389,7 @@ final class Zmodem extends Protocol implements CRCInterface,ZmodemInterface
 		$crc = self::LSZ_INIT_CRC32;
 		$buf = '';
 
-		$this->client->buffer_clear();
+		$this->client->tx_purge();
 		$buf = $send->sendas.chr(0);
 
 		$buf .= sprintf('%ld %lo %o %o %ld %ld',