diff --git a/scripts/install b/scripts/install
index 118759b..a36bca9 100755
--- a/scripts/install
+++ b/scripts/install
@@ -1,6 +1,7 @@
 #!/bin/bash
 
-#set -e
+# Exit on command errors and treat unset variables as an error
+set -eu
 
 # Retrieve arguments
 app=duniter
@@ -43,17 +44,16 @@ sudo yunohost firewall allow TCP $port > /dev/null 2>&1
 ynh_app_setting_set $app port $port
 
 # Install Duniter
-cd /tmp
 arch=$(uname -m)
 if [ $arch == "x86_64" ]; then
 	arch="x64"
-	wget -nc https://github.com/duniter/duniter/releases/download/$version/duniter-$version-linux-$arch.deb
+	wget -nc https://github.com/duniter/duniter/releases/download/$version/duniter-$version-linux-$arch.deb -P /tmp
 #elif [ $arch == "armv7l" ]; then
-#	wget -nc https://github.com/duniter/duniter/releases/download/$version/duniter-$version-linux-$arch.deb
+#	wget -nc https://github.com/duniter/duniter/releases/download/$version/duniter-$version-linux-$arch.deb -P /tmp
 else
 	ynh_die "$arch is not currently supported." 2
 fi
-sudo dpkg -i duniter-$version-linux-$arch.deb
+sudo dpkg -i /tmp/duniter-$version-linux-$arch.deb
 #sudo rm -f /tmp/duniter-$version-linux-$arch.deb
 #source ~/.bashrc
 
diff --git a/scripts/remove b/scripts/remove
index bdf0422..4d4e1fd 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -1,7 +1,5 @@
 #!/bin/bash
 
-#set -e
-
 # Source app helpers
 source /usr/share/yunohost/helpers
 
diff --git a/scripts/upgrade b/scripts/upgrade
index 30f9bde..93b1ca2 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -1,8 +1,16 @@
 #!/bin/bash
 
-#set -e
+# Exit on command errors and treat unset variables as an error
+set -eu
 
 app=duniter
 
+# Stop duniter daemon
+sudo $app stop
+
 # Upgrade Duniter package
-$app restart
+#dpkg -r
+#dpkg -i
+
+# Start duniter daemon
+sudo $app start