diff --git a/abduco.c b/abduco.c
index 6c58a27..8cc5908 100644
--- a/abduco.c
+++ b/abduco.c
@@ -350,7 +350,7 @@ static bool attach_session(const char *name) {
 	cur_term.c_cc[VLNEXT] = _POSIX_VDISABLE;
 	cur_term.c_cc[VMIN] = 1;
 	cur_term.c_cc[VTIME] = 0;
-	tcsetattr(0, TCSADRAIN, &cur_term);
+	tcsetattr(STDIN_FILENO, TCSADRAIN, &cur_term);
 
 	int status = client_mainloop();
 	client_restore_terminal();
diff --git a/client.c b/client.c
index b60d326..87a62fc 100644
--- a/client.c
+++ b/client.c
@@ -30,7 +30,7 @@ static void client_show_cursor() {
 
 static void client_restore_terminal() {
 	if (has_term)
-		tcsetattr(0, TCSADRAIN, &orig_term);
+		tcsetattr(STDIN_FILENO, TCSADRAIN, &orig_term);
 	client_show_cursor();
 }
 
@@ -44,7 +44,7 @@ static int client_mainloop() {
 
 		if (client.need_resize) {
 			struct winsize ws;
-			if (ioctl(0, TIOCGWINSZ, &ws) != -1) {
+			if (ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) != -1) {
 				Packet pkt = {
 					.type = MSG_RESIZE,
 					.u = { .ws = ws },