diff --git a/builder/chroot-script.sh b/builder/chroot-script.sh
index 58432a7..8533c5e 100644
--- a/builder/chroot-script.sh
+++ b/builder/chroot-script.sh
@@ -120,7 +120,7 @@ apt-get update
 # apt-get upgrade -y
 
 # install packages
-apt-get  -o Dpkg::Options::=--force-confdef \
+DEBIAN_FRONTEND=noninteractive apt-get  -o Dpkg::Options::=--force-confdef \
   install -y \
   --no-install-recommends \
   firmware-atheros \