diff --git a/src/bip39.cpp b/src/bip39.cpp
index 07f5b74..9f25132 100644
--- a/src/bip39.cpp
+++ b/src/bip39.cpp
@@ -120,7 +120,7 @@ word_list generate_mnemonic(entropy_bits_t entropy /* = entropy_bits::_128 */, l
     assert((total_bits % BITS_PER_WORD) == 0);
     assert((word_count % MNEMONIC_WORD_MULTIPLE) == 0);
 
-    random_bytes_engine rbe;
+    random_bytes_engine rbe(std::random_device{}());
     std::vector<uint8_t> data(entropy_bits / BYTE_BITS);
     std::generate(begin(data), end(data), [&rbe]() { return static_cast<uint8_t>(std::ref(rbe)()); });
     return create_mnemonic(data, lang);
diff --git a/src/include/bip39/word_list.h b/src/include/bip39/word_list.h
index 502fad7..37b0608 100644
--- a/src/include/bip39/word_list.h
+++ b/src/include/bip39/word_list.h
@@ -1,6 +1,7 @@
 #ifndef BIP39_WORD_LIST_H
 #define BIP39_WORD_LIST_H
 
+#include <iostream>
 #include <vector>
 #include <string>