diff --git a/src/node/health_check/package.json b/src/node/health_check/package.json
index b68e8b1a804..582d5601016 100644
--- a/src/node/health_check/package.json
+++ b/src/node/health_check/package.json
@@ -19,11 +19,11 @@
     "lodash": "^3.9.3",
     "google-protobuf": "^3.0.0-alpha.5"
   },
-  "files": {
+  "files": [
     "LICENSE",
     "health.js",
     "v1"
-  },
+  ],
   "main": "src/node/index.js",
   "license": "BSD-3-Clause"
 }