diff --git a/docker/phraseanet/boot.sh b/docker/phraseanet/boot.sh
index ede2f1db60..444b63a64c 100755
--- a/docker/phraseanet/boot.sh
+++ b/docker/phraseanet/boot.sh
@@ -4,6 +4,7 @@ set -xe
 
 chown -R app:app /var/alchemy/Phraseanet/config
 chown -R app:app /var/alchemy/Phraseanet/datas
+chown -R app:app /var/alchemy/Phraseanet/tmp
 chown -R app:app /var/alchemy/Phraseanet/www/thumbnails
 FILE=/var/alchemy/Phraseanet/config/configuration.yml
 if [ -f "$FILE" ]; then