diff --git a/mmgen/addrfile.py b/mmgen/addrfile.py
index e32b1677..417a4364 100755
--- a/mmgen/addrfile.py
+++ b/mmgen/addrfile.py
@@ -299,11 +299,8 @@ class AddrFile(MMGenObject):
 			data = self.parse_file_body(lines[1:-1])
 			assert isinstance(data, list), 'Invalid file body data'
 		except Exception as e:
-			m = 'Invalid data in {} list file {!r}{} ({!s})'.format(
-				p.desc,
-				self.infile,
-				(f', content line {self.line_ctr}' if self.line_ctr else ''),
-				e)
+			m_add = f', content line {self.line_ctr}' if self.line_ctr else ''
+			m = f'Invalid data in {p.desc} list file ‘{fn}’{m_add} ({e!s})'
 			if exit_on_error:
 				die(3, m)
 			else:
diff --git a/mmgen/cfg.py b/mmgen/cfg.py
index f939cd61..e9e3555c 100755
--- a/mmgen/cfg.py
+++ b/mmgen/cfg.py
@@ -854,7 +854,8 @@ def check_opts(cfg): # Raises exception if any check fails
 				from .wallet import get_wallet_data
 				wd = get_wallet_data(wtype='incog_hidden')
 				if val2 and val2 not in wd.fmt_codes:
-					die('UserOptError', f'Option conflict:\n  {fmt_opt(name)}, with\n  {fmt_opt(key2)}={val2}')
+					die('UserOptError',
+						f'Option {fmt_opt(name)} conflicts with option {fmt_opt(key2)}={val2}')
 
 		hidden_incog_output_params = hidden_incog_input_params
 
diff --git a/mmgen/rpc/local.py b/mmgen/rpc/local.py
index c20d769d..8149413e 100755
--- a/mmgen/rpc/local.py
+++ b/mmgen/rpc/local.py
@@ -9,7 +9,7 @@
 #   https://gitlab.com/mmgen/mmgen-wallet
 
 """
-rpc: local RPC client class for the MMGen Project
+rpc.local: local RPC client class for the MMGen Project
 """
 
 import sys, json, asyncio, importlib
diff --git a/mmgen/tw/unspent.py b/mmgen/tw/unspent.py
index 7e69238a..cdca9236 100755
--- a/mmgen/tw/unspent.py
+++ b/mmgen/tw/unspent.py
@@ -115,7 +115,7 @@ class TwUnspentOutputs(TwView):
 
 		return data
 
-	def get_column_widths(self, data, wide, interactive):
+	def get_column_widths(self, data, *, wide, interactive):
 
 		show_mmid = self.show_mmid or wide
 
diff --git a/mmgen/tw/view.py b/mmgen/tw/view.py
index e4907d9a..66818508 100755
--- a/mmgen/tw/view.py
+++ b/mmgen/tw/view.py
@@ -381,7 +381,7 @@ class TwView(MMGenObject, metaclass=AsyncInit):
 	def gen_subheader(self, cw, color):
 		if self.twctl.use_cached_balances:
 			from ..color import nocolor, yellow
-			yield (nocolor, yellow)[color]('WARNING: Using cached balances. These may be out of date!')
+			yield (nocolor, yellow)[color]('Using cached balances. These may be out of date!')
 		else:
 			yield f'Displaying balances with {self.minconf} confirmation{suf(self.minconf)}'