diff --git a/imports/startup/server/calcUnionAsync.js b/imports/startup/server/calcUnionAsync.js
index b5ad54a..ecb7a9c 100644
--- a/imports/startup/server/calcUnionAsync.js
+++ b/imports/startup/server/calcUnionAsync.js
@@ -12,7 +12,7 @@ const WORKER_PATH = path.resolve(process.cwd(), 'assets/app/workers/unionWorker.
 // and fails with "Cannot find module '@turf/circle'". Resolving the absolute
 // path here, where Meteor's own module system already knows how to find it,
 // and handing it to the worker sidesteps that entirely.
-const NPM_MODULES = path.resolve(process.cwd(), 'programs/server/npm/node_modules');
+const NPM_MODULES = path.resolve(process.cwd(), 'npm/node_modules');
 const turfPaths = {
   circle: path.join(NPM_MODULES, '@turf/circle'),
   union: path.join(NPM_MODULES, '@turf/union'),