diff --git a/scripts/backup b/scripts/backup
index 7ff261f..f3b6604 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -74,7 +74,7 @@ fi
 
 ynh_backup --src_path="/etc/influxdb"
 ynh_backup --src_path="/etc/$app"
-ynh_backup --src_path="/var/lib/grafana/plugins"
+ynh_backup --src_path="/var/lib/grafana/plugins" --not_mandatory
 
 #=================================================
 # BACKUP THE MYSQL DATABASE
diff --git a/scripts/restore b/scripts/restore
index 5aebe16..2477044 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -76,7 +76,7 @@ ynh_script_progression --message="Restoring various files..." --weight=2
 
 ynh_restore_file --origin_path="/etc/influxdb"
 ynh_restore_file --origin_path="/etc/grafana"
-ynh_restore_file --origin_path="/var/lib/grafana/plugins"
+ynh_restore_file --origin_path="/var/lib/grafana/plugins" --not_mandatory
 
 #=================================================
 # RESTORE THE INFLUXDB DATABASE