diff --git a/app/Jobs/ApplicationDeploymentJob.php b/app/Jobs/ApplicationDeploymentJob.php
index 4ae0f9f49..896e28666 100644
--- a/app/Jobs/ApplicationDeploymentJob.php
+++ b/app/Jobs/ApplicationDeploymentJob.php
@@ -1332,8 +1332,8 @@ private function php_finetunes(&$parsed)
             $variables = data_get($parsed, 'variables', []);
 
             $envCommands = [];
-            foreach ($variables as $key => $value) {
-                $envCommands[] = "echo \"$key=\${$key}\" >> /app/.env";
+            foreach (array_keys($variables) as $key) {
+                $envCommands[] = "printf '%s=%s\\n' ".escapeshellarg($key)." \"\${$key}\" >> /app/.env";
             }
 
             if (! empty($envCommands)) {