diff --git a/scripts/install b/scripts/install
index 0e53741..2b8b49c 100644
--- a/scripts/install
+++ b/scripts/install
@@ -107,7 +107,11 @@ ynh_script_progression --message="Installing backend..." --weight=15
 tempdir="$(mktemp -d)"
 ynh_setup_source --dest_dir=$tempdir --source_id=api
 ynh_exec_warn_less dpkg -i $tempdir/vikunja-unstable-amd64.deb
+
+mkdir -p "/opt/vikunja/files"
+
 chmod +x "/opt/vikunja/vikunja"
+chown -R $app:www-data "/opt/vikunja/files"
 
 #=================================================
 # NGINX CONFIGURATION
diff --git a/scripts/restore b/scripts/restore
index 507b857..a5f7ea0 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -69,6 +69,7 @@ ynh_restore_file --origin_path="/etc/vikunja/config.yml"
 
 ynh_restore_file --origin_path="/opt/vikunja"
 chmod +x "/opt/vikunja/vikunja"
+chown -R $app:www-data "/opt/vikunja/files"
 
 #=================================================
 # REINSTALL DEPENDENCIES
diff --git a/scripts/upgrade b/scripts/upgrade
index d84baf7..580f2c8 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -96,12 +96,16 @@ then
 
 	# Download, check integrity, uncompress and patch the source from app.src
 	ynh_setup_source --dest_dir="$final_path" --source_id="front" --keep="/etc/vikunja/config.yml"
+
+	mkdir -p "/opt/vikunja/files"
+
 fi
 
 chmod 750 "$final_path"
 chmod -R o-rwx "$final_path"
 chown -R $app:www-data "$final_path"
-chmod +x /opt/vikunja/vikunja
+chmod +x "/opt/vikunja/vikunja"
+chown -R $app:www-data "/opt/vikunja/files"
 
 #=================================================
 # ADD A CONFIGURATION