diff --git a/services/StockService.php b/services/StockService.php
index f73ac5bd..f39bdd00 100644
--- a/services/StockService.php
+++ b/services/StockService.php
@@ -697,6 +697,10 @@ class StockService extends BaseService
 		if (Grocycode::Validate($barcode))
 		{
 			$gc = new Grocycode($barcode);
+			if ($gc->GetType() != Grocycode::PRODUCT)
+			{
+				throw new \Exception('Invalid grocycode');
+			}
 			return intval($gc->GetId());
 		}