diff --git a/classes/Validate.php b/classes/Validate.php
index 665e1afae..ad2f187e9 100644
--- a/classes/Validate.php
+++ b/classes/Validate.php
@@ -761,7 +761,7 @@ class ValidateCore
 	 */
 	public static function isFileName($name)
 	{
-		return preg_match('/^[a-zA-Z0-9_.-]*$/', $name);
+		return preg_match('/^[a-zA-Z0-9_.-]+$/', $name);
 	}
 
 	/**