diff --git a/data/manage-tokens/src/main/kotlin/com/tangem/data/managetokens/DefaultCustomTokensRepository.kt b/data/manage-tokens/src/main/kotlin/com/tangem/data/managetokens/DefaultCustomTokensRepository.kt
index 249608663c..cacf327062 100644
--- a/data/manage-tokens/src/main/kotlin/com/tangem/data/managetokens/DefaultCustomTokensRepository.kt
+++ b/data/manage-tokens/src/main/kotlin/com/tangem/data/managetokens/DefaultCustomTokensRepository.kt
@@ -53,8 +53,8 @@ internal class DefaultCustomTokensRepository(
                 Blockchain.Binance,
                 Blockchain.BinanceTestnet,
                 -> true
-                Blockchain.Cardano -> blockchain.validateContractAddress(contractAddress.lowercase())
-                else -> blockchain.validateAddress(contractAddress.lowercase())
+                Blockchain.Cardano -> blockchain.validateContractAddress(contractAddress)
+                else -> blockchain.validateAddress(contractAddress)
             }
         }