diff --git a/tools/coins_details.py b/tools/coins_details.py
index 841b5f9589..c481b65251 100755
--- a/tools/coins_details.py
+++ b/tools/coins_details.py
@@ -3,12 +3,12 @@
 import time
 import json
 import requests
-import pprint
 import ethereum_tokens_gen
 import build_coins
 
 COINS = {}
 
+
 def coinmarketcap_init():
     global COINS
 
@@ -44,11 +44,12 @@ def coinmarketcap_info(shortcut):
 
     for _id in COINS:
         coin = COINS[_id]
-        #print(shortcut, coin['website_slug'])
+        # print(shortcut, coin['website_slug'])
         if shortcut == coin['website_slug']:
-            #print(coin)
+            # print(coin)
             return coin
 
+
 def update_marketcap(obj, shortcut):
     try:
         obj['marketcap_usd'] = int(float(coinmarketcap_info(shortcut)['quotes']['USD']['market_cap']))
@@ -56,15 +57,18 @@ def update_marketcap(obj, shortcut):
         pass
         # print("Marketcap info not found for", shortcut)
 
+
 def coinmarketcap_global():
     url = 'https://api.coinmarketcap.com/v2/global'
     ret = requests.get(url)
     data = ret.json()
     return data
 
+
 def set_default(obj, key, default_value):
     obj[key] = obj.setdefault(key, default_value)
 
+
 def update_info(details):
     details['info']['updated_at'] = int(time.time())
     details['info']['updated_at_readable'] = time.asctime()
@@ -83,6 +87,7 @@ def update_info(details):
             marketcap += details['coins'][k].setdefault('marketcap_usd', 0)
     details['info']['marketcap_usd'] = marketcap
 
+
 def check_unsupported(details, prefix, supported):
     for k in details['coins'].keys():
         if not k.startswith(prefix):
@@ -90,6 +95,7 @@ def check_unsupported(details, prefix, supported):
         if k not in supported:
             print("%s not supported by Trezor? (Possible manual entry)" % k)
 
+
 def update_coins(details):
     (coins, _) = build_coins.process(None)
     firmware = json.load(open('../defs/support.json', 'r'))
@@ -116,16 +122,9 @@ def update_coins(details):
 
     check_unsupported(details, 'coin:', supported)
 
+
 def update_erc20(details):
-    networks = ['eth',
-        'exp',
-        # 'rop',
-        # 'rin',
-        'ubq',
-        # 'rsk',
-        # 'kov',
-        'etc',
-    ]
+    networks = [x[0] for x in ethereum_tokens_gen.networks]
 
     LATEST_T1 = 'https://raw.githubusercontent.com/trezor/trezor-mcu/v1.6.1/firmware/ethereum_tokens.c'
     LATEST_T2 = 'https://raw.githubusercontent.com/trezor/trezor-core/v2.0.6/src/apps/ethereum/tokens.py'
@@ -175,6 +174,7 @@ def update_erc20(details):
 
     check_unsupported(details, 'erc20:', supported)
 
+
 def update_ethereum(details):
     out = details['coins'].setdefault('coin2:ETH', {})
     out['type'] = 'coin'
@@ -248,6 +248,7 @@ def update_ethereum(details):
     set_default(out, 't2_enabled', 'yes')
     update_marketcap(out, 'eosc')
 
+
 def update_mosaics(details):
     d = json.load(open('../defs/nem/nem_mosaics.json'))
     supported = []
@@ -267,6 +268,7 @@ def update_mosaics(details):
 
     check_unsupported(details, 'mosaic:', supported)
 
+
 def check_missing_details(details):
     for k in details['coins'].keys():
         coin = details['coins'][k]
@@ -288,7 +290,7 @@ def check_missing_details(details):
             print("%s: Strange URL for Trezor Wallet" % k)
             hide = True
 
-        for w in [ x.lower() for x in coin.get('links', {}).keys() ]:
+        for w in [x.lower() for x in coin.get('links', {}).keys()]:
             if 'wallet' in w or 'electrum' in w:
                 break
         else:
@@ -312,6 +314,7 @@ def check_missing_details(details):
         if details['coins'][k].get('hidden') == 1:
             print("%s: Coin is hidden" % k)
 
+
 if __name__ == '__main__':
     try:
         details = json.load(open('../defs/coins_details.json', 'r'))
diff --git a/tools/ethereum_tokens_gen.py b/tools/ethereum_tokens_gen.py
index 5a288a8493..0021d5d31f 100755
--- a/tools/ethereum_tokens_gen.py
+++ b/tools/ethereum_tokens_gen.py
@@ -2,6 +2,8 @@
 import sys
 import os
 import json
+import re
+
 
 def get_tokens():
     tokens = []
@@ -25,28 +27,31 @@ def get_tokens():
 
 
 def print_tokens(tokens, python=False):
+    count = 0
     for t in sorted(tokens, key=lambda x: x['chain'] + x['symbol'].upper()):
-        address, name, symbol, decimal, chain, chain_id = t['address'], t['name'], t['symbol'], int(t['decimals']), t['chain'], t['chain_id']
-        address = '\\x'.join([address[i:i + 2] for i in range(0, len(address), 2)])[2:].lower()
+        address, name, symbol, decimal, chain, chain_id = t['address'], t['name'], t['symbol'], int(t['decimals']), t['chain'], t['chain_id']  # noqa:E501
+        address = '\\x'.join([address[i:i + 2] for i in range(0, len(address), 2)])[2:].lower()  # noqa:E501
+        ascii_only = re.match(r'^[ -\x7F]+$', symbol) is not None
+        if not ascii_only:  # skip Unicode symbols, they are stupid
+            continue
+        count += 1
         if python:
-            print("    (%d, b'%s', '%s', %d),  # %s / %s" % (chain_id, address, symbol, decimal, chain, name))
+            print("    (%d, b'%s', '%s', %d),  # %s / %s" % (chain_id, address, symbol, decimal, chain, name))  # noqa:E501
         else:
-            print('\t{%2d, "%s", " %s", %d}, // %s / %s' % (chain_id, address, symbol, decimal, chain, name))
-
-    return len(tokens)
+            print('\t{%2d, "%s", " %s", %d}, // %s / %s' % (chain_id, address, symbol, decimal, chain, name))  # noqa:E501
+    return count
 
 
 # disabled are networks with no tokens defined in ethereum-lists/tokens repo
 
 networks = [
-    ('eth', 1),
-    ('exp', 2),
-    # ('rop', 3),
-    # ('rin', 4),
-    ('ubq', 8),
-    # ('rsk', 30),
-    # ('kov', 42),
+    ('ella', 64),
     ('etc', 61),
+    ('eth', 1),
+    ('kov', 42),
+    ('rin', 4),
+    ('rop', 3),
+    ('ubq', 8),
 ]