diff --git a/c/src/lib/libbsp/sparc/shared/uart/apbuart_termios.c b/c/src/lib/libbsp/sparc/shared/uart/apbuart_termios.c
index 26a06c9527..3000dbcb93 100644
--- a/c/src/lib/libbsp/sparc/shared/uart/apbuart_termios.c
+++ b/c/src/lib/libbsp/sparc/shared/uart/apbuart_termios.c
@@ -78,7 +78,7 @@ static void apbuart_write_polled(
   size_t nwrite = 0;
 
   while (nwrite < len) {
-    apbuart_outbyte_polled(uart->regs, *buf++, 1, 0);
+    apbuart_outbyte_polled(uart->regs, *buf++, 0, 0);
     nwrite++;
   }
 }