diff --git a/recipe/common.php b/recipe/common.php
index 719414ba..2dc0106a 100644
--- a/recipe/common.php
+++ b/recipe/common.php
@@ -69,7 +69,21 @@ set('use_atomic_symlink', function () {
     return commandSupportsOption('mv', '--no-target-directory');
 });
 
-set('env', []); // Run command environment (for example, SYMFONY_ENV=prod)
+/**
+ * Remote environment variables.
+ * ```php
+ * set('env', [
+ *     'KEY' => 'something',
+ * ]);
+ * ```
+ *
+ * It is possible to override it per `run()` call.
+ *
+ * ```php
+ * run('echo $KEY', ['env' => ['KEY' => 'over']]
+ * ```
+ */
+set('env', []);
 
 /**
  * Return current release path.
diff --git a/src/Support/helpers.php b/src/Support/helpers.php
index 4cd9dcf2..e6f6b931 100644
--- a/src/Support/helpers.php
+++ b/src/Support/helpers.php
@@ -88,15 +88,9 @@ function starts_with(string $string, string $startString)
 }
 
 /**
- * Take array of key/value and create string of it.
- *
  * This function used for create environment string.
- *
- * @param array $array
- *
- * @return string
  */
-function array_to_string(array $array): string
+function env_strinfigy(array $array): string
 {
     return implode(' ', array_map(
         function ($key, $value) {
diff --git a/src/functions.php b/src/functions.php
index 7492ff5e..5295baa1 100644
--- a/src/functions.php
+++ b/src/functions.php
@@ -25,7 +25,7 @@ use Symfony\Component\Console\Question\ChoiceQuestion;
 use Symfony\Component\Console\Question\ConfirmationQuestion;
 use Symfony\Component\Console\Question\Question;
 use function Deployer\Support\array_merge_alternate;
-use function Deployer\Support\array_to_string;
+use function Deployer\Support\env_strinfigy;
 use function Deployer\Support\str_contains;
 
 /**
@@ -297,7 +297,8 @@ function within($path, $callback)
  * Options:
  * - `timeout` - Sets the process timeout (max. runtime). The timeout in seconds (default: 300 sec).
  * - `secret` - Placeholder `%secret%` can be used in command. Placeholder will be replaced with this value and will not appear in any logs.
- * - `vars` - Array of placeholders to replace in command: `run('echo %key%', ['vars' => ['key' => 'anything does here']])`;
+ * - `vars` - Array of placeholders to replace in command: `run('echo %key%', ['vars' => ['key' => 'anything does here']]);`
+ * - `env` - Array of environment variables: `run('echo $KEY', ['env' => ['key' => 'value']]);`
  *
  * Examples:
  *
@@ -330,7 +331,7 @@ function run($command, $options = [])
 
         $env = array_merge_alternate(get('env', []), $options['env'] ?? []);
         if (!empty($env)) {
-            $env = array_to_string($env);
+            $env = env_strinfigy($env);
             $command = "export $env; $command";
         }
 
@@ -380,7 +381,7 @@ function runLocally($command, $options = [])
 
     $env = array_merge_alternate(get('env', []), $options['env'] ?? []);
     if (!empty($env)) {
-        $env = array_to_string($env);
+        $env = env_strinfigy($env);
         $command = "export $env; $command";
     }
 
diff --git a/test/joy/EnvTest.php b/test/joy/EnvTest.php
new file mode 100644
index 00000000..a8baf971
--- /dev/null
+++ b/test/joy/EnvTest.php
@@ -0,0 +1,24 @@
+<?php
+/* (c) Anton Medvedev <anton@medv.io>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Deployer;
+
+class EnvTest extends AbstractTest
+{
+    const RECIPE = __DIR__ . '/recipe/env.php';
+
+    public function testOnce()
+    {
+        $this->init(self::RECIPE);
+        $this->tester->run(['test', '-f' => self::RECIPE]);
+
+        $display = $this->tester->getDisplay();
+        self::assertEquals(0, $this->tester->getStatusCode(), $display);
+        self::assertStringContainsString('global=global', $display);
+        self::assertStringContainsString('local=local', $display);
+    }
+}
diff --git a/test/joy/recipe/env.php b/test/joy/recipe/env.php
new file mode 100644
index 00000000..8c485c47
--- /dev/null
+++ b/test/joy/recipe/env.php
@@ -0,0 +1,14 @@
+<?php
+
+namespace Deployer;
+
+localhost('prod');
+
+set('env', [
+    'VAR' => 'global',
+]);
+
+task('test', function () {
+    info('global=' . run('echo $VAR'));
+    info('local=' . run('echo $VAR', ['env' => ['VAR' => 'local']]));
+});