diff --git a/components/console/linenoise/linenoise.c b/components/console/linenoise/linenoise.c
index 46ae946c44..780d6dc7d6 100644
--- a/components/console/linenoise/linenoise.c
+++ b/components/console/linenoise/linenoise.c
@@ -171,6 +171,7 @@ enum KEY_ACTION{
 	CTRL_U = 21,        /* Ctrl+u */
 	CTRL_W = 23,        /* Ctrl+w */
 	ESC = 27,           /* Escape */
+	UNIT_SEP = 31,      /* ctrl-_ */
 	BACKSPACE =  127    /* Backspace */
 };
 
@@ -1116,9 +1117,7 @@ static int linenoiseDumb(char* buf, size_t buflen, const char* prompt) {
         int c = fgetc(stdin);
         if (c == '\n') {
             break;
-        } else if (c >= 0x1c && c <= 0x1f){
-            continue; /* consume arrow keys */
-        } else if (c == BACKSPACE || c == 0x8) {
+        } else if (c == BACKSPACE || c == CTRL_H) {
             if (count > 0) {
                 buf[count - 1] = 0;
                 count--;
@@ -1131,6 +1130,10 @@ static int linenoiseDumb(char* buf, size_t buflen, const char* prompt) {
                 continue;
             }
 
+        } else if (c <= UNIT_SEP) {
+            /* Consume all character that are non printable (the backspace
+             * case is handled above) */
+            continue;
         } else {
             buf[count] = c;
             ++count;