diff --git a/src/device/serial.c b/src/device/serial.c
index 2d1aad6b3..e5490d763 100644
--- a/src/device/serial.c
+++ b/src/device/serial.c
@@ -203,14 +203,6 @@ serial_transmit(serial_t *dev, uint8_t val)
 	write_fifo(dev, val);
     else if (dev->sd->dev_write)
 	dev->sd->dev_write(dev, dev->sd->priv, val);
-
-    if ((val >= ' ' && val <= '~') || val == '\r' || val == '\n') {
-    	fputc(val, stdout);
-    	if (val == '\n')
-    		fflush(stdout);
-    } else {
-    	fprintf(stdout, "[%02X]", val);
-    }
 }