diff --git a/contracts/tokens/erc721/BEBadge.sol b/contracts/tokens/erc721/BEBadge.sol
index 2f1969c..7ba7831 100644
--- a/contracts/tokens/erc721/BEBadge.sol
+++ b/contracts/tokens/erc721/BEBadge.sol
@@ -137,8 +137,10 @@ contract BEBadge is AccessControl, ERC721Enumerable {
     _metaAddress = metaAddress;
   }
 
-  function updateDuation(uint256 valNew) external onlyRole(DEFAULT_ADMIN_ROLE) {
-    require(valNew > 1, "batch size too short");
+  function updateBatchLimit(
+    uint256 valNew
+  ) external onlyRole(DEFAULT_ADMIN_ROLE) {
+    require(valNew > 0, "batch size too short");
     maxBatchSize = valNew;
   }