diff --git a/lib/package-envs.js b/lib/package-envs.js
index aa935b2..612f850 100644
--- a/lib/package-envs.js
+++ b/lib/package-envs.js
@@ -1,32 +1,29 @@
-// https://github.com/npm/rfcs/pull/183
-
-const envVal = val => {
-  if (Array.isArray(val)) {
-    return val.map(v => envVal(v)).join('\n\n')
-  }
-  if (val === null || val === false) {
-    return ''
-  }
-  return String(val)
-}
-
-const packageEnvs = (env, vals, prefix) => {
+const packageEnvs = (vals, prefix, env = {}) => {
   for (const [key, val] of Object.entries(vals)) {
     if (val === undefined) {
       continue
-    } else if (val && !Array.isArray(val) && typeof val === 'object') {
-      packageEnvs(env, val, `${prefix}${key}_`)
+    } else if (val === null || val === false) {
+      env[`${prefix}${key}`] = ''
+    } else if (Array.isArray(val)) {
+      val.forEach((item, index) => {
+        packageEnvs({ [`${key}_${index}`]: item }, `${prefix}`, env)
+      })
+    } else if (typeof val === 'object') {
+      packageEnvs(val, `${prefix}${key}_`, env)
     } else {
-      env[`${prefix}${key}`] = envVal(val)
+      env[`${prefix}${key}`] = String(val)
     }
   }
   return env
 }
 
-module.exports = (env, pkg) => packageEnvs({ ...env }, {
-  name: pkg.name,
-  version: pkg.version,
-  config: pkg.config,
-  engines: pkg.engines,
-  bin: pkg.bin,
-}, 'npm_package_')
+// https://github.com/npm/rfcs/pull/183 defines which fields we put into the environment
+module.exports = pkg => {
+  return packageEnvs({
+    name: pkg.name,
+    version: pkg.version,
+    config: pkg.config,
+    engines: pkg.engines,
+    bin: pkg.bin,
+  }, 'npm_package_')
+}
diff --git a/lib/run-script-pkg.js b/lib/run-script-pkg.js
index 1495fa3..ea33db5 100644
--- a/lib/run-script-pkg.js
+++ b/lib/run-script-pkg.js
@@ -69,7 +69,7 @@ const runScriptPkg = async options => {
     path,
     scriptShell,
     binPaths,
-    env: packageEnvs(env, pkg),
+    env: { ...env, ...packageEnvs(pkg) },
     stdio,
     cmd,
     args,
diff --git a/test/make-spawn-args.js b/test/make-spawn-args.js
index cc1f719..83e90a0 100644
--- a/test/make-spawn-args.js
+++ b/test/make-spawn-args.js
@@ -39,7 +39,8 @@ t.test('spawn args', async t => {
           e.env.npm_package_config_test_null === '' &&
           e.env.npm_package_config_test_false === '' &&
           e.env.npm_package_config_test_string === pkg.config.test_string &&
-          e.env.npm_package_config_test_array === pkg.config.test_array.join('\n\n') &&
+          e.env.npm_package_config_test_array_0 === pkg.config.test_array[0] &&
+          e.env.npm_package_config_test_array_1 === pkg.config.test_array[1] &&
           e.env.npm_package_bin === pkg.bin &&
           e.env.npm_package_engines_npm === pkg.engines.npm &&
           e.env.npm_package_engines_node === pkg.engines.node &&