diff --git a/packages/react-scripts/scripts/utils/createJestConfig.js b/packages/react-scripts/scripts/utils/createJestConfig.js
index b4c2cfa5ea9..4c428004a84 100644
--- a/packages/react-scripts/scripts/utils/createJestConfig.js
+++ b/packages/react-scripts/scripts/utils/createJestConfig.js
@@ -45,12 +45,12 @@ module.exports = (resolve, rootDir, isEjecting) => {
     },
     moduleFileExtensions: [
       'web.js',
-      'mjs',
       'js',
       'json',
       'web.jsx',
       'jsx',
       'node',
+      'mjs',
     ],
   };
   if (rootDir) {