diff --git a/src/Inputs/DateTimeInput.php b/src/Inputs/DateTimeInput.php
index 7522b5e..37dc1bf 100644
--- a/src/Inputs/DateTimeInput.php
+++ b/src/Inputs/DateTimeInput.php
@@ -13,6 +13,7 @@
 
 use Czubehead\BootstrapForms\Enums\DateTimeFormat;
 use DateTime;
+use Nette\InvalidArgumentException;
 use Nette\NotSupportedException;
 
 
@@ -59,6 +60,25 @@ public function getValue()
 		return $value;
 	}
 
+	/**
+	 * @param DateTime|null $value
+	 * @return static
+	 */
+	public function setValue($value)
+	{
+		if ($value instanceof DateTime) {
+			parent::setValue($value->format($this->format));
+
+			return $this;
+		}
+		elseif ($value === NULL) {
+			parent::setValue(NULL);
+
+			return $this;
+		}
+		throw new InvalidArgumentException('Value must be either DateTime or NULL');
+	}
+
 	public function validate()
 	{
 		parent::validate();