diff --git a/src/serial.c b/src/serial.c
index 1c41fe0..72d3594 100644
--- a/src/serial.c
+++ b/src/serial.c
@@ -91,8 +91,10 @@
 		goto error;
 	}
 
-	cfsetispeed(&tio, baudrate);
-	cfsetospeed(&tio, baudrate);
+	if (cfsetispeed(&tio, baudrate) < 0)
+		dbg_perror("cfsetispeed()");
+	if (cfsetospeed(&tio, baudrate) < 0)
+		dbg_perror("cfsetospeed()");
 
 	tio.c_cflag &= ~(PARENB | CSTOPB | CSIZE | CRTSCTS);
 	tio.c_cflag |=  (CREAD | CLOCAL | CS8);
@@ -136,8 +138,11 @@
 		dbg_perror("tcgetattr()");
 		return -errno;
 	}
-	cfsetispeed(&tio, baudrate);
-	cfsetospeed(&tio, baudrate);
+
+	if (cfsetispeed(&tio, baudrate) < 0)
+		dbg_perror("cfsetispeed()");
+	if (cfsetospeed(&tio, baudrate) < 0)
+		dbg_perror("cfsetospeed()");
 
 	rc = tcsetattr(fd, TCSANOW, &tio);
 	if (rc < 0) {