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 d5cc7c5..d8cbe79 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
@@ -25,7 +25,7 @@ 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
-find "${BUILDS}" -mindepth 1 -maxdepth 1 -type d -exec chown nobody:nginx {} \; 2>/dev/null || true
+find "${BUILDS}" -mindepth 1 -maxdepth 1 -type d -exec chown -R nobody:nginx {} \; 2>/dev/null || true
 find "${BUILDS}" -mindepth 1 -maxdepth 1 -type d -exec chmod 2775 {} \; 2>/dev/null || true
 chown nobody:nobody "${DOCKER_HOME}/.docker" 2>/dev/null || true
 chmod 775 "${DOCKER_HOME}/.docker" 2>/dev/null || true