diff --git a/backend/package.json b/backend/package.json
index 9c9ccba54..a995c5dd6 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -28,7 +28,7 @@
     "verbose": true,
     "collectCoverage": true,
     "collectCoverageFrom": [
-      "**/*.{js}",
+      "**/*.js",
       "!**/node_modules/**",
       "!**/test/**"
     ],
@@ -37,7 +37,7 @@
       "lcov"
     ],
     "testMatch": [
-      "**/src/**/?(*.)+(spec|test).js?(x)"
+      "**/src/**/?(*.).spec.js"
     ]
   },
   "dependencies": {
diff --git a/webapp/package.json b/webapp/package.json
index 900adfc72..a41f13e11 100644
--- a/webapp/package.json
+++ b/webapp/package.json
@@ -27,9 +27,6 @@
       "text",
       "lcov"
     ],
-    "moduleFileExtensions": [
-      "js"
-    ],
     "transform": {
       ".*\\.(vue)$": "vue-jest",
       "^.+\\.js$": "<rootDir>/node_modules/babel-jest"
@@ -39,7 +36,7 @@
       "^~/(.*)$": "<rootDir>/$1"
     },
     "testMatch": [
-      "**/src/**/?(*.)+(spec|test).js?(x)"
+      "**/?(*.).spec.js"
     ]
   },
   "dependencies": {