diff --git a/src/mnemonics/electrum-words.cpp b/src/mnemonics/electrum-words.cpp
index ffa82b21..66ad9a59 100644
--- a/src/mnemonics/electrum-words.cpp
+++ b/src/mnemonics/electrum-words.cpp
@@ -255,7 +255,7 @@ namespace crypto
       std::string wlist_copy = words;
       if (seed.size() == seed_length/2)
       {
-        memcpy(dst.data, dst.data + 16, 16);  // if electrum 12-word seed, duplicate
+        memcpy(dst.data+16, dst.data, 16);  // if electrum 12-word seed, duplicate
         wlist_copy += ' ';
         wlist_copy += words;
       }