diff --git a/common/console.c b/common/console.c
index 5576dfd..898da39 100644
--- a/common/console.c
+++ b/common/console.c
@@ -417,7 +417,7 @@
 void putc(const char c)
 {
 #ifdef CONFIG_SANDBOX
-	if (!gd) {
+	if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) {
 		os_putc(c);
 		return;
 	}
@@ -447,7 +447,7 @@
 void puts(const char *s)
 {
 #ifdef CONFIG_SANDBOX
-	if (!gd) {
+	if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) {
 		os_puts(s);
 		return;
 	}