diff --git a/FormField.php b/FormField.php
index bf5cdf3..8d7a2f5 100644
--- a/FormField.php
+++ b/FormField.php
@@ -23,6 +23,6 @@ class FormField {
 	}
 
 	public function loadFromEnv($name) {
-		$this->value=$_POST[$name];
+		$this->value=isset($_POST[$name])?$_POST[$name]:null;
 	}
 }