diff --git a/common/cli_readline.c b/common/cli_readline.c
index 60a232b..99b6317 100644
--- a/common/cli_readline.c
+++ b/common/cli_readline.c
@@ -273,6 +273,10 @@ static int cread_line(const char *const prompt, char *buf, unsigned int *len,
 
 		ichar = getcmd_getch();
 
+		/* ichar=0x0 when error occurs in U-Boot getc */
+		if (!ichar)
+			continue;
+
 		if ((ichar == '\n') || (ichar == '\r')) {
 			putc('\n');
 			break;