diff --git a/src/currency_core/tx_pool.cpp b/src/currency_core/tx_pool.cpp
index 467d295f..0c93fd65 100644
--- a/src/currency_core/tx_pool.cpp
+++ b/src/currency_core/tx_pool.cpp
@@ -389,16 +389,18 @@ namespace currency
         return false; // stop handling
       }
 
-      //std::string prev_alias = m_blockchain.get_alias_by_address(eai.m_address);
-      //if (!is_in_block && !eai.m_sign.size() &&
-      //  prev_alias.size())
-      //{
-      //  LOG_PRINT_L0("Address \"" << get_account_address_as_str(eai.m_address)  
-      //    << "\" already registered with \""<< prev_alias 
-      //    << "\" alias in blockchain (new alias: \"" << eai.m_alias  << "\"), transaction rejected");
-      //  r = false;
-      //  return false; // stop handling
-      //}
+#ifndef TESTNET
+      std::string prev_alias = m_blockchain.get_alias_by_address(eai.m_address);
+      if (!is_in_block && !eai.m_sign.size() &&
+        prev_alias.size())
+      {
+        LOG_PRINT_L0("Address \"" << get_account_address_as_str(eai.m_address)  
+          << "\" already registered with \""<< prev_alias 
+          << "\" alias in blockchain (new alias: \"" << eai.m_alias  << "\"), transaction rejected");
+        r = false;
+        return false; // stop handling
+      }
+#endif
 
       if (!is_in_block)
       {