diff --git a/conf/le5/escola/create-iso.conf b/conf/le5/escola/create-iso.conf
index f28736e5c25812cb83bf0edc000f60a1a10a8af7..6acf2e5c68233717ba73bca603b04e39f596b014 100644
--- a/conf/le5/escola/create-iso.conf
+++ b/conf/le5/escola/create-iso.conf
@@ -16,3 +16,4 @@ MOUNTLIST="$TMP/mountlist"
 SQUASHIMAGE="$PREFIX/squashfs-root"
 DISTROISO="$PREFIX/iso/DISTNAME/$DISTRO-BASENAME-i386"
 TEMPLATES="$PREFIX/templates/DISTNAME"
+DEBIAN_FRONTEND="noninteractive"
diff --git a/conf/le5/home/create-iso.conf b/conf/le5/home/create-iso.conf
index f28736e5c25812cb83bf0edc000f60a1a10a8af7..6acf2e5c68233717ba73bca603b04e39f596b014 100644
--- a/conf/le5/home/create-iso.conf
+++ b/conf/le5/home/create-iso.conf
@@ -16,3 +16,4 @@ MOUNTLIST="$TMP/mountlist"
 SQUASHIMAGE="$PREFIX/squashfs-root"
 DISTROISO="$PREFIX/iso/DISTNAME/$DISTRO-BASENAME-i386"
 TEMPLATES="$PREFIX/templates/DISTNAME"
+DEBIAN_FRONTEND="noninteractive"
diff --git a/conf/le5/light/create-iso.conf b/conf/le5/light/create-iso.conf
index f28736e5c25812cb83bf0edc000f60a1a10a8af7..6acf2e5c68233717ba73bca603b04e39f596b014 100644
--- a/conf/le5/light/create-iso.conf
+++ b/conf/le5/light/create-iso.conf
@@ -16,3 +16,4 @@ MOUNTLIST="$TMP/mountlist"
 SQUASHIMAGE="$PREFIX/squashfs-root"
 DISTROISO="$PREFIX/iso/DISTNAME/$DISTRO-BASENAME-i386"
 TEMPLATES="$PREFIX/templates/DISTNAME"
+DEBIAN_FRONTEND="noninteractive"
diff --git a/conf/le5/multiterminal/create-iso.conf b/conf/le5/multiterminal/create-iso.conf
index f28736e5c25812cb83bf0edc000f60a1a10a8af7..6acf2e5c68233717ba73bca603b04e39f596b014 100644
--- a/conf/le5/multiterminal/create-iso.conf
+++ b/conf/le5/multiterminal/create-iso.conf
@@ -16,3 +16,4 @@ MOUNTLIST="$TMP/mountlist"
 SQUASHIMAGE="$PREFIX/squashfs-root"
 DISTROISO="$PREFIX/iso/DISTNAME/$DISTRO-BASENAME-i386"
 TEMPLATES="$PREFIX/templates/DISTNAME"
+DEBIAN_FRONTEND="noninteractive"