2 files changed, 4 insertions, 1 deletions
diff --git a/common.h b/common.h
index fed4dbd..26b371d 100644
--- a/common.h
+++ b/common.h
@@ -10,6 +10,8 @@
 	sleep_disable ();
 
 #define __unused__ __attribute__ ((unused))
+/* print assert messages */
+#define __ASSERT_USE_STDERR
 
 #endif /* COMMON_H */
 
diff --git a/uart.c b/uart.c
index 2eebe16..6906a8c 100644
--- a/uart.c
+++ b/uart.c
@@ -44,8 +44,9 @@ void uartInit () {
 	/* Set frame format: 8 data, 1 stop bit, even parity */
 	UCSR0C = (1<<UPM01) | (0 << UPM00) | (0<<USBS0)|(3<<UCSZ00);
 
-	/* redirect stdout */
+	/* redirect stdout/stderr */
 	stdout = &mystdout;
+	stderr = &mystdout;
 }
 
 #if 0