diff --git a/bin/clean-install b/bin/clean-install
index 632bd74..87f729a 100755
--- a/bin/clean-install
+++ b/bin/clean-install
@@ -8,7 +8,7 @@ if [ $# = 0 ]; then
 fi
 
 apt-get update
-apt-get install -y --no-install-recommends $@
+DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends "$@"
 apt-get clean -y
 rm -rf \
    /var/cache/debconf/* \
diff --git a/bin/clean-uninstall b/bin/clean-uninstall
index ec044c7..de8ac6a 100755
--- a/bin/clean-uninstall
+++ b/bin/clean-uninstall
@@ -7,7 +7,7 @@ if [ $# = 0 ]; then
   exit 1
 fi
 
-apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false $@
+DEBIAN_FRONTEND=noninteractive apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false "$@"
 apt-get clean -y
 rm -rf \
    /var/cache/debconf/* \