diff --git a/clean-DATA-LOSS.sh b/clean-DATA-LOSS.sh
index 32dabb4d55c74467f030e3a1a0c093b0bb4baf5f..d46a95b2e986b5ae2aee23768af67fc7db5a1dbb 100755
--- a/clean-DATA-LOSS.sh
+++ b/clean-DATA-LOSS.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 # Remove everything that is not git tracked on the submodules.
 # May cause data loss.
-git submodule foreach git clean -dfX
+git submodule foreach git clean -dffX
 # sudo here because of: https://tuleap.ring.cx/plugins/tracker/?aid=301
 sudo rm -rf install *.log *.pid
diff --git a/ubuntu-15.10-android-install-all-devices.sh b/ubuntu-15.10-android-install-all-devices.sh
index 5aebefadd517aa101915acf1f47984e983b50646..502e28e2df5a41f3df4e4ecb961e7aa4de58cdac 100755
--- a/ubuntu-15.10-android-install-all-devices.sh
+++ b/ubuntu-15.10-android-install-all-devices.sh
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 # Build the Android app and install it on all connected devices.
+set -e
 cd client-android
 ./compile.sh
 # From: http://stackoverflow.com/questions/8610733/how-can-i-adb-install-an-apk-to-multiple-connected-devices