diff --git a/electrum/plugins/trustedcoin/trustedcoin.py b/electrum/plugins/trustedcoin/trustedcoin.py
index 318868937..314bc2555 100644
--- a/electrum/plugins/trustedcoin/trustedcoin.py
+++ b/electrum/plugins/trustedcoin/trustedcoin.py
@@ -537,7 +537,7 @@ class TrustedCoinPlugin(BasePlugin):
 
     def make_seed(self, seed_type):
         if not is_any_2fa_seed_type(seed_type):
-            raise Exception(f'unexpected seed type: {seed_type}')
+            raise Exception(f'unexpected seed type: {seed_type!r}')
         return Mnemonic('english').make_seed(seed_type=seed_type)
 
     @hook
@@ -557,7 +557,7 @@ class TrustedCoinPlugin(BasePlugin):
     def xkeys_from_seed(self, seed, passphrase):
         t = seed_type(seed)
         if not is_any_2fa_seed_type(t):
-            raise Exception(f'unexpected seed type: {t}')
+            raise Exception(f'unexpected seed type: {t!r}')
         words = seed.split()
         n = len(words)
         if t == '2fa':
@@ -578,7 +578,7 @@ class TrustedCoinPlugin(BasePlugin):
             xprv1, xpub1 = self.get_xkeys(seed, t, passphrase, "m/0'/")
             xprv2, xpub2 = self.get_xkeys(seed, t, passphrase, "m/1'/")
         else:
-            raise Exception(f'unexpected seed type: {t}')
+            raise Exception(f'unexpected seed type: {t!r}')
         return xprv1, xpub1, xprv2, xpub2
 
     @hook
diff --git a/electrum/version.py b/electrum/version.py
index ca2deaff7..f37cc9d14 100644
--- a/electrum/version.py
+++ b/electrum/version.py
@@ -19,4 +19,4 @@ def seed_prefix(seed_type):
         return SEED_PREFIX_2FA
     elif seed_type == '2fa_segwit':
         return SEED_PREFIX_2FA_SW
-    raise Exception(f"unknown seed_type: {seed_type}")
+    raise Exception(f"unknown seed_type: {seed_type!r}")
diff --git a/electrum/wizard.py b/electrum/wizard.py
index 1cab5ac3c..7b6dd46f7 100644
--- a/electrum/wizard.py
+++ b/electrum/wizard.py
@@ -521,7 +521,7 @@ class NewWalletWizard(AbstractWizard):
         elif wallet_type == 'multisig' and seed_type not in ['standard', 'segwit', 'bip39', 'slip39']:
             seed_valid = False
 
-        self._logger.debug(f'seed verified: {seed_valid}, type={seed_type}, validation_message={validation_message}')
+        self._logger.debug(f'seed verified: {seed_valid}, type={seed_type!r}, validation_message={validation_message}')
 
         return seed_valid, seed_type, validation_message, can_passphrase