diff --git a/data/helpers.d/utils b/data/helpers.d/utils
index 3dc0c9bfc..db51578db 100644
--- a/data/helpers.d/utils
+++ b/data/helpers.d/utils
@@ -37,16 +37,22 @@ ynh_get_plain_key() {
 ynh_restore_upgradebackup () {
 	echo "Upgrade failed." >&2
 	local app_bck=${app//_/-}	# Replace all '_' by '-'
-	
-        # Check if an existing backup can be found before removing and restoring the application.
-	if sudo yunohost backup list | grep -q $app_bck-pre-upgrade$backup_number
-    	then
-		# Remove the application then restore it
-		sudo yunohost app remove $app
-		# Restore the backup
-		sudo yunohost backup restore --ignore-system $app_bck-pre-upgrade$backup_number --apps $app --force
-		ynh_die "The app was restored to the way it was before the failed upgrade."
-	fi
+        NO_BACKUP_UPGRADE=${NO_BACKUP_UPGRADE:-0}
+
+        if [ "$NO_BACKUP_UPGRADE" -eq 0 ]
+        then	
+		# Check if an existing backup can be found before removing and restoring the application.
+		if sudo yunohost backup list | grep -q $app_bck-pre-upgrade$backup_number
+		then
+			# Remove the application then restore it
+			sudo yunohost app remove $app
+			# Restore the backup
+			sudo yunohost backup restore --ignore-system $app_bck-pre-upgrade$backup_number --apps $app --force
+			ynh_die "The app was restored to the way it was before the failed upgrade."
+		fi
+        else
+                echo "\$NO_BACKUP_UPGRADE is set, that means there's no backup to restore. You have to fix this upgrade by yourself !" >&2
+        fi
 }
 
 # Make a backup in case of failed upgrade
@@ -67,28 +73,34 @@ ynh_backup_before_upgrade () {
 	backup_number=1
 	local old_backup_number=2
 	local app_bck=${app//_/-}	# Replace all '_' by '-'
+	NO_BACKUP_UPGRADE=${NO_BACKUP_UPGRADE:-0}
 
-	# Check if a backup already exists with the prefix 1
-	if sudo yunohost backup list | grep -q $app_bck-pre-upgrade1
-	then
-		# Prefix becomes 2 to preserve the previous backup
-		backup_number=2
-		old_backup_number=1
-	fi
-
-	# Create backup
-	sudo yunohost backup create --ignore-system --apps $app --name $app_bck-pre-upgrade$backup_number
-	if [ "$?" -eq 0 ]
-	then
-		# If the backup succeeded, remove the previous backup
-		if sudo yunohost backup list | grep -q $app_bck-pre-upgrade$old_backup_number
+        if [ "$NO_BACKUP_UPGRADE" -eq 0 ]
+        then
+		# Check if a backup already exists with the prefix 1
+		if sudo yunohost backup list | grep -q $app_bck-pre-upgrade1
 		then
-			# Remove the previous backup only if it exists
-			sudo yunohost backup delete $app_bck-pre-upgrade$old_backup_number > /dev/null
+			# Prefix becomes 2 to preserve the previous backup
+			backup_number=2
+			old_backup_number=1
 		fi
-	else
-		ynh_die "Backup failed, the upgrade process was aborted."
-	fi
+
+		# Create backup
+		sudo yunohost backup create --ignore-system --apps $app --name $app_bck-pre-upgrade$backup_number
+		if [ "$?" -eq 0 ]
+		then
+			# If the backup succeeded, remove the previous backup
+			if sudo yunohost backup list | grep -q $app_bck-pre-upgrade$old_backup_number
+			then
+				# Remove the previous backup only if it exists
+				sudo yunohost backup delete $app_bck-pre-upgrade$old_backup_number > /dev/null
+			fi
+		else
+			ynh_die "Backup failed, the upgrade process was aborted."
+		fi
+        else
+                echo "\$NO_BACKUP_UPGRADE is set, backup will be avoided. Be careful, this upgrade is going to be operated without securi$
+        fi
 }
 
 # Download, check integrity, uncompress and patch the source from app.src