diff --git a/src/wallet/wallet2.h b/src/wallet/wallet2.h
index edbf31f2d..4cbed2f9e 100644
--- a/src/wallet/wallet2.h
+++ b/src/wallet/wallet2.h
@@ -102,7 +102,12 @@ namespace tools
     void store();
     cryptonote::account_base& get_account(){return m_account;}
 
-    void init(const std::string& daemon_address = "http://localhost:8080", uint64_t upper_transaction_size_limit = CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE*2 - CRYPTONOTE_COINBASE_BLOB_RESERVED_SIZE);
+    // upper_transaction_size_limit as defined below is set to 
+    // approximately 125% of the fixed minimum allowable penalty
+    // free block size. TODO: fix this so that it actually takes
+    // into account the current median block size rather than
+    // the minimum block size.
+    void init(const std::string& daemon_address = "http://localhost:8080", uint64_t upper_transaction_size_limit = ((CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE * 125) / 100) - CRYPTONOTE_COINBASE_BLOB_RESERVED_SIZE);
     bool deinit();
 
     void stop() { m_run.store(false, std::memory_order_relaxed); }