diff --git a/scripts/backup b/scripts/backup
index f7c35f8..88947a2 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -1,5 +1,5 @@
 #!/bin/bash
-
+set -eu
 # Source app helpers
 source /usr/share/yunohost/helpers
 
diff --git a/scripts/remove b/scripts/remove
index fa70c40..aec41e7 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -1,4 +1,5 @@
 #!/bin/bash
+set -u
 
 source .fonctions       # Charge les fonctions génériques habituellement utilisées dans le script
 
diff --git a/scripts/restore b/scripts/restore
index e8a19dc..7a00cdd 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -1,4 +1,5 @@
 #!/bin/bash
+set -eu
 
 # Source app helpers
 source /usr/share/yunohost/helpers
diff --git a/scripts/upgrade b/scripts/upgrade
index 0773c29..e6e8bd2 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -1,4 +1,5 @@
 #!/bin/bash
+set -eu
 
 source .fonctions       # Charge les fonctions génériques habituellement utilisées dans le script