Diff of /plugins/enum-option.php [40ad84] .. [6591d4] Maximize Restore

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--- a/plugins/enum-option.php
+++ b/plugins/enum-option.php
@@ -16,7 +16,7 @@
 			}
 			if ($field["null"]) {
 				$options[""][""] = "NULL";
-				if (!isset($value) && !isset($_GET["select"])) {
+				if ($value === null && !isset($_GET["select"])) {
 					$selected = "";
 				}
 			}