diff --git a/libubb/swuart.c b/libubb/swuart.c
index 36a59ff..34ed0cc 100644
--- a/libubb/swuart.c
+++ b/libubb/swuart.c
@@ -232,9 +232,6 @@ void swuart_clear_errors(void)
 
 int swuart_open(uint32_t tx, uint32_t rx, int bps)
 {
-	if (ubb_open(0))
-		return -1;
-
 	ticks = TCLK/bps-1;
 	tx_mask = tx;
 	rx_mask = rx;
@@ -250,5 +247,4 @@ int swuart_open(uint32_t tx, uint32_t rx, int bps)
 
 void swuart_close(void)
 {
-	ubb_close(0);
 }