1 files changed, 1 insertions, 0 deletions

diff --git a/miscutils/less.c b/miscutils/less.c
index 0b0dc0c8b..19051f6f6 100644
--- a/miscutils/less.c
+++ b/miscutils/less.c
@@ -239,6 +239,7 @@ static void data_readlines(void) {
 
         if(inp == NULL)
                 inp = (inp_stdin) ? bb_xfopen(CURRENT_TTY, "r") : stdin;
+        if(inp == NULL) bb_perror_msg_and_die("no tty");
 
         if (flags & FLAG_N)
                 add_linenumbers();