diff --git a/termenu-cmd b/termenu-cmd
index 26181f2..77989fa 100755
--- a/termenu-cmd
+++ b/termenu-cmd
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 import re
 import sys
 import termenu
diff --git a/termenu/termenu.py b/termenu/termenu.py
index 2abf1ed..0a3adb3 100644
--- a/termenu/termenu.py
+++ b/termenu/termenu.py
@@ -571,9 +571,9 @@ def redirect_std():
     stdin = sys.stdin
     stdout = sys.stdout
     if not sys.stdin.isatty():
-        sys.stdin = open("/dev/tty", "r", 0)
+        sys.stdin = open("/dev/tty", "rb", 0)
     if not sys.stdout.isatty():
-        sys.stdout = open("/dev/tty", "w", 0)
+        sys.stdout = open("/dev/tty", "wb", 0)
     return stdin, stdout