diff --git a/build/api/module/ueController.php b/build/api/module/ueController.php
index e29430a..66da246 100644
--- a/build/api/module/ueController.php
+++ b/build/api/module/ueController.php
@@ -132,7 +132,7 @@ class ueController{
 	* @volumeTD<float>					[OPT] The UE required volume of TD
 	* @volumeTP<float>					[OPT] The UE required volume of TP
 	* @disabled<bool>					[OPT] If it is disabled
-	* @defaultFormation<int>			[OPT] If there is a foreign key for a default formation (if only one formation)
+	* @defaultFormation<int>			[OPT] default formation for this UE (-1 to unset, NULL to ignore)
 	*
 	* @return updated<bool>				Whether it has been updated
 	*
@@ -145,7 +145,7 @@ class ueController{
 		$volumeTD         = 0;
 		$volumeTP         = 0;
 		$disabled         = true;
-		$defaultFormation = -1;
+		$defaultFormation = null;
 		extract($args);
 
 		/* Get the ue repo */
@@ -161,7 +161,7 @@ class ueController{
 			$volumeTD,
 			$volumeTP,
 			$disabled,
-			is_int($defaultFormation) && $defaultFormation < 0 ? null : $defaultFormation
+			$defaultFormation
 		)];
 
 	}