diff --git a/install.sh b/install.sh
index ae62479..fe7f24f 100755
--- a/install.sh
+++ b/install.sh
@@ -108,8 +108,8 @@ fi
 
 echo ""
 ok "Launching ${BINARY}..."
-if tty_dev=$(tty 2>/dev/null); then
-    exec "$INSTALL_DIR/$BINARY" <"$tty_dev" >"$tty_dev" 2>"$tty_dev"
+if { true </dev/tty; } 2>/dev/null; then
+    exec "$INSTALL_DIR/$BINARY" </dev/tty >/dev/tty 2>/dev/tty
 else
     ok "Run: $BINARY"
 fi