diff --git a/scripts/backup b/scripts/backup
index c0a1e25..5e7bb8b 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -1,4 +1,6 @@
 #!/bin/bash
+
+set -e
 app=kanboard
 
 # The parameter $1 is the backup directory location
diff --git a/scripts/install b/scripts/install
index e36b41c..c7748ba 100644
--- a/scripts/install
+++ b/scripts/install
@@ -1,4 +1,6 @@
 #!/bin/bash
+
+set -e
 app=kanboard
 
 # Retrieve arguments
@@ -10,10 +12,8 @@ admin=$3
 email=$(sudo yunohost user info $admin | grep mail: | sed "s/mail: //g")
 
 # Check domain/path availability
-sudo yunohost app checkurl $domain$path -a $app
-if [[ ! $? -eq 0 ]]; then
-    exit 1
-fi
+sudo yunohost app checkurl $domain$path -a $app  \
+    || (echo "Path not available: $domain$path" && exit 1)
 
 # Generate random password
 db_pwd=$(openssl rand -hex 15)
diff --git a/scripts/restore b/scripts/restore
index 34e8abf..42db852 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -1,4 +1,6 @@
 #!/bin/bash
+
+set -e
 app=kanboard
 
 # The parameter $1 is the uncompressed restore directory location
diff --git a/scripts/upgrade b/scripts/upgrade
index b9b40e8..a916d82 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -1,4 +1,6 @@
 #!/bin/bash
+
+set -e
 app=kanboard
 
 # Retrieve settings