diff --git a/src/wallet/monero_wallet_core.cpp b/src/wallet/monero_wallet_core.cpp
index c9bdaea..94bdc27 100644
--- a/src/wallet/monero_wallet_core.cpp
+++ b/src/wallet/monero_wallet_core.cpp
@@ -994,7 +994,15 @@ namespace monero {
     return static_cast<monero_network_type>(m_w2->nettype());
   }
 
+  string monero_wallet_core::get_mnemonic() const {
+    if (m_w2->watch_only()) throw runtime_error("The wallet is watch-only. Cannot retrieve mnemonic.");
+    epee::wipeable_string wipeable_mnemonic;
+    m_w2->get_seed(wipeable_mnemonic);
+    return string(wipeable_mnemonic.data(), wipeable_mnemonic.size());
+  }
+
   string monero_wallet_core::get_mnemonic_language() const {
+    if (m_w2->watch_only()) throw runtime_error("The wallet is watch-only. Cannot retrieve mnemonic language.");
     return m_w2->get_seed_language();
   }
 
@@ -1004,12 +1012,6 @@ namespace monero {
     return languages;
   }
 
-  string monero_wallet_core::get_mnemonic() const {
-    epee::wipeable_string wipeable_mnemonic;
-    m_w2->get_seed(wipeable_mnemonic);
-    return string(wipeable_mnemonic.data(), wipeable_mnemonic.size());
-  }
-
   string monero_wallet_core::get_public_view_key() const {
     MTRACE("get_private_view_key()");
     return epee::string_tools::pod_to_hex(m_w2->get_account().get_keys().m_account_address.m_view_public_key);