diff --git a/package.json b/package.json
index b0fe3e4b..02f9653b 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
     "test": "npm run test-unit",
     "test-unit": "mocha --recursive \"./{,!(node_modules)/**/}*.spec.js\" || echo .",
     "start": "echo Run node client.js start [instance] to start slaves && node master.js",
-    "cover": "./node_modules/.bin/istanbul cover ./node_modules/mocha/bin/_mocha -- \"./{,!(node_modules)/**/}*.spec.js\" -R spec"
+    "cover": "./node_modules/.bin/istanbul cover ./node_modules/mocha/bin/_mocha -- \"./{,!(node_modules)/**/}*.spec.js\" -R spec || echo ."
   },
   "keywords": [
     "factorio"