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-rw-r--r--src/misc/openpty.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/misc/openpty.c b/src/misc/openpty.c
index 0b4eb221..10202473 100644
--- a/src/misc/openpty.c
+++ b/src/misc/openpty.c
@@ -12,7 +12,7 @@ int openpty(int *m, int *s, char *name, const struct termios *tio, const struct
 	char buf[20];
 
 	*m = open("/dev/ptmx", O_RDWR|O_NOCTTY);
-	if (!*m) return -1;
+	if (*m < 0) return -1;
 
 	if (ioctl(*m, TIOCSPTLCK, &n) || ioctl (*m, TIOCGPTN, &n)) {
 		close(*m);