diff --git a/tests/exchange/test_exchange.py b/tests/exchange/test_exchange.py
index a21a5f3ac..774ad8cf2 100644
--- a/tests/exchange/test_exchange.py
+++ b/tests/exchange/test_exchange.py
@@ -876,6 +876,7 @@ def test_sell_considers_time_in_force(default_conf, mocker, exchange_name):
 
 def test_get_balance_dry_run(default_conf, mocker):
     default_conf['dry_run'] = True
+    default_conf['dry_run_wallet'] = 999.9
 
     exchange = get_patched_exchange(mocker, default_conf)
     assert exchange.get_balance(currency='BTC') == 999.9
diff --git a/tests/test_configuration.py b/tests/test_configuration.py
index 89ca74afa..292d53315 100644
--- a/tests/test_configuration.py
+++ b/tests/test_configuration.py
@@ -8,9 +8,9 @@ from pathlib import Path
 from unittest.mock import MagicMock
 
 import pytest
-from jsonschema import Draft4Validator, ValidationError, validate
+from jsonschema import ValidationError
 
-from freqtrade import OperationalException, constants
+from freqtrade import OperationalException
 from freqtrade.configuration import (Arguments, Configuration, check_exchange,
                                      remove_credentials,
                                      validate_config_consistency)
@@ -718,7 +718,8 @@ def test_load_config_warn_forcebuy(default_conf, mocker, caplog) -> None:
 
 
 def test_validate_default_conf(default_conf) -> None:
-    validate(default_conf, constants.CONF_SCHEMA, Draft4Validator)
+    # Validate via our validator - we allow setting defaults!
+    validate_config_schema(default_conf)
 
 
 def test_validate_tsl(default_conf):
diff --git a/tests/test_freqtradebot.py b/tests/test_freqtradebot.py
index 5e197da71..a73fd6c61 100644
--- a/tests/test_freqtradebot.py
+++ b/tests/test_freqtradebot.py
@@ -211,6 +211,7 @@ def test_edge_overrides_stake_amount(mocker, edge_conf) -> None:
     patch_RPCManager(mocker)
     patch_exchange(mocker)
     patch_edge(mocker)
+    edge_conf['dry_run_wallet'] = 999.9
     freqtrade = FreqtradeBot(edge_conf)
 
     assert freqtrade._get_trade_stake_amount('NEO/BTC') == (999.9 * 0.5 * 0.01) / 0.20
@@ -1338,6 +1339,7 @@ def test_tsl_on_exchange_compatible_with_edge(mocker, edge_conf, fee, caplog,
     patch_exchange(mocker)
     patch_edge(mocker)
     edge_conf['max_open_trades'] = float('inf')
+    edge_conf['dry_run_wallet'] = 999.9
     mocker.patch.multiple(
         'freqtrade.exchange.Exchange',
         get_ticker=MagicMock(return_value={