diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp
index 6c34c3fd..23fcf986 100644
--- a/src/wallet/wallet2.cpp
+++ b/src/wallet/wallet2.cpp
@@ -2255,7 +2255,7 @@ crypto::secret_key wallet2::generate(const std::string& wallet_, const std::stri
     // Set blockchain height calculated from current date/time
     uint64_t approx_blockchain_height = get_approximate_blockchain_height();
     if(approx_blockchain_height > 0) {
-      m_refresh_from_block_height = approx_blockchain_height - blocks_per_month;
+      m_refresh_from_block_height = approx_blockchain_height >= blocks_per_month ? approx_blockchain_height - blocks_per_month : 0;
     }
   }
   bool r = store_keys(m_keys_file, password, false);