diff --git a/htdocs/product/stock/class/api_warehouses.class.php b/htdocs/product/stock/class/api_warehouses.class.php
index e39ede652995d..1af08af0534aa 100644
--- a/htdocs/product/stock/class/api_warehouses.class.php
+++ b/htdocs/product/stock/class/api_warehouses.class.php
@@ -222,9 +222,9 @@ public function put($id, $request_data = null)
 
 		if ($this->warehouse->update($id, DolibarrApiAccess::$user)) {
 			return $this->get($id);
+		} else {
+			throw new RestException(500, $this->warehouse->error);
 		}
-
-		return false;
 	}
 
 	/**