diff --git a/sim/cluster0/lab-seeds/backend/scripts/prepare-be-builder-dirs.sh b/sim/cluster0/lab-seeds/backend/scripts/prepare-be-builder-dirs.sh
index 6fb8cdb..098722f 100755
--- a/sim/cluster0/lab-seeds/backend/scripts/prepare-be-builder-dirs.sh
+++ b/sim/cluster0/lab-seeds/backend/scripts/prepare-be-builder-dirs.sh
@@ -13,14 +13,17 @@ OTA_ROOT="${3:-/var/www/localhost/htdocs/apps/app/androidcast_project/ota-artifa
 
 mkdir -p "${BUILDS}" "${DOCKER_HOME}/.docker" "${DOWNLOADS}" "${OTA_ROOT}/v0/ota/channel"
 chown -R nginx:nginx "${BROADCAST_ROOT}" "${DOWNLOADS}" "${OTA_ROOT}" 2>/dev/null || true
-chmod -R 775 "${BUILDS}" "${DOCKER_HOME}/.docker" "${DOWNLOADS}" "${OTA_ROOT}" 2>/dev/null || true
+chmod -R 775 "${DOWNLOADS}" "${OTA_ROOT}" 2>/dev/null || true
+
+# PHP-FPM www pool is often nobody; artifact dirs must be writable by that user.
+chown nobody:nginx "${BUILDS}" 2>/dev/null || true
+chmod 2775 "${BUILDS}" 2>/dev/null || true
+chown nobody:nobody "${DOCKER_HOME}/.docker" 2>/dev/null || true
+chmod 775 "${DOCKER_HOME}/.docker" 2>/dev/null || true
 
-# PHP-FPM www pool is often nobody; builds run as that user.
 if getent group docker >/dev/null 2>&1; then
   usermod -aG docker nobody 2>/dev/null || true
 fi
-chown nobody:nobody "${DOCKER_HOME}/.docker" 2>/dev/null || true
-chmod 775 "${DOCKER_HOME}/.docker" 2>/dev/null || true
 
 echo "Builder dirs ready:"
 echo "  artifacts: ${BUILDS}"
diff --git a/sim/cluster0/scripts/compose-lab-backend.sh b/sim/cluster0/scripts/compose-lab-backend.sh
index 8ce6ba5..15d12e9 100755
--- a/sim/cluster0/scripts/compose-lab-backend.sh
+++ b/sim/cluster0/scripts/compose-lab-backend.sh
@@ -377,7 +377,7 @@ $config['build'] = array_merge([
     'scripts_dir' => '/var/www/ac/workspace/ac-scripts',
     'notify' => [
         'admin_email' => 'bestcastr@gmail.com',
-        'broadcast_config' => '/var/www/ac/workspace/ac-ms-broadcast/config/config.php',
+        'broadcast_config' => '/var/www/ac/broadcast/config/config.php',
     ],
 ], $config['build'] ?? []);
 return $config;