diff --git a/x/asset/ft/client/cli/tx.go b/x/asset/ft/client/cli/tx.go
index 02ec64ac5..1842a5388 100644
--- a/x/asset/ft/client/cli/tx.go
+++ b/x/asset/ft/client/cli/tx.go
@@ -558,6 +558,8 @@ $ %s tx grant <grantee_addr> burn --burn-limit 100ucore --expiration 1667979596
 					return fmt.Errorf("burn-limit should be greater than zero")
 				}
 				authorization = types.NewBurnAuthorization(limitCoins)
+			default:
+				return errors.Errorf("invalid authorization types, %s", args[1])
 			}
 
 			expire, err := getExpireTime(cmd)
diff --git a/x/asset/ft/types/burn_authorization.go b/x/asset/ft/types/burn_authorization.go
index 70c0149fc..96b438a0f 100644
--- a/x/asset/ft/types/burn_authorization.go
+++ b/x/asset/ft/types/burn_authorization.go
@@ -1,3 +1,4 @@
+//nolint:dupl // this code is identical to the mint part, but they should not be merged.
 package types
 
 import (
diff --git a/x/asset/ft/types/mint_authorization.go b/x/asset/ft/types/mint_authorization.go
index 54ded9c16..aa0d4b7d7 100644
--- a/x/asset/ft/types/mint_authorization.go
+++ b/x/asset/ft/types/mint_authorization.go
@@ -1,3 +1,4 @@
+//nolint:dupl // this code is identical to the burn part, but they should not be merged.
 package types
 
 import (