diff --git a/freqtrade/plugins/pairlist/pairlist_helpers.py b/freqtrade/plugins/pairlist/pairlist_helpers.py
index f1eca6df0..0cec734fb 100644
--- a/freqtrade/plugins/pairlist/pairlist_helpers.py
+++ b/freqtrade/plugins/pairlist/pairlist_helpers.py
@@ -1,5 +1,5 @@
 import re
-from typing import List
+from typing import Any, Dict, List
 
 
 def expand_pairlist(wildcardpl: List[str], available_pairs: List[str],
@@ -42,7 +42,7 @@ def expand_pairlist(wildcardpl: List[str], available_pairs: List[str],
     return result
 
 
-def dynamic_expand_pairlist(config: dict, markets: list) -> List[str]:
+def dynamic_expand_pairlist(config: Dict[str, Any], markets: List[str]) -> List[str]:
     expanded_pairs = expand_pairlist(config['pairs'], markets)
     if config.get('freqai', {}).get('enabled', False):
         corr_pairlist = config['freqai']['feature_parameters']['include_corr_pairlist']
diff --git a/freqtrade/strategy/interface.py b/freqtrade/strategy/interface.py
index 45609beaa..f41369189 100644
--- a/freqtrade/strategy/interface.py
+++ b/freqtrade/strategy/interface.py
@@ -157,7 +157,8 @@ class IStrategy(ABC, HyperStrategyMixin):
             class DummyClass():
                 def start(self, *args, **kwargs):
                     raise OperationalException(
-                        'freqAI is not enabled. Please enable it in your config to use this strategy.')
+                        'freqAI is not enabled. '
+                        'Please enable it in your config to use this strategy.')
             self.freqai = DummyClass()  # type: ignore
 
     def ft_bot_start(self, **kwargs) -> None:
diff --git a/tests/plugins/test_pairlist.py b/tests/plugins/test_pairlist.py
index c56f405e2..d3d08dc8c 100644
--- a/tests/plugins/test_pairlist.py
+++ b/tests/plugins/test_pairlist.py
@@ -12,7 +12,7 @@ from freqtrade.constants import AVAILABLE_PAIRLISTS
 from freqtrade.enums import CandleType, RunMode
 from freqtrade.exceptions import OperationalException
 from freqtrade.persistence import Trade
-from freqtrade.plugins.pairlist.pairlist_helpers import expand_pairlist
+from freqtrade.plugins.pairlist.pairlist_helpers import dynamic_expand_pairlist, expand_pairlist
 from freqtrade.plugins.pairlistmanager import PairListManager
 from freqtrade.resolvers import PairListResolver
 from tests.conftest import (create_mock_trades_usdt, get_patched_exchange, get_patched_freqtradebot,
@@ -1282,6 +1282,22 @@ def test_expand_pairlist(wildcardlist, pairs, expected):
             expand_pairlist(wildcardlist, pairs)
     else:
         assert sorted(expand_pairlist(wildcardlist, pairs)) == sorted(expected)
+        conf = {
+            'pairs': wildcardlist,
+            'freqai': {
+                "enabled": True,
+                "feature_parameters": {
+                    "include_corr_pairlist": [
+                        "BTC/USDT:USDT",
+                        "XRP/BUSD",
+                    ]
+                }
+            }
+        }
+        assert sorted(dynamic_expand_pairlist(conf, pairs)) == sorted(expected + [
+            "BTC/USDT:USDT",
+            "XRP/BUSD",
+        ])
 
 
 @pytest.mark.parametrize('wildcardlist,pairs,expected', [