diff --git a/scstatsitem.php b/scstatsitem.php
index fc56dd0..3deb5f2 100644
--- a/scstatsitem.php
+++ b/scstatsitem.php
@@ -16,7 +16,7 @@ $flash_message = $flash['message'] ?? '';
 $db = db();
 $csrf_token = auth_csrf_token();
 
-$allowed_units = ['%', '°C', 'RPM', 'Q', 'SCU'];
+$allowed_units = ['', '%', '°C', 'RPM', 'Q', 'SCU', 'mRem', 'mRem/s'];
 
 
 if ($_SERVER['REQUEST_METHOD'] === 'POST') {