diff --git a/webapp/services/BlockChainService.php b/webapp/services/BlockChainService.php
index 378569e2..34442438 100644
--- a/webapp/services/BlockChainService.php
+++ b/webapp/services/BlockChainService.php
@@ -197,7 +197,7 @@ class BlockChainService {
         break;
         default:
         {
-            error_log("unkonw currencyName " . $currencyName);
+            error_log("unknow currencyName " . $currencyName);
             die();
         }
         break;