diff --git a/freqtrade/data/dataprovider.py b/freqtrade/data/dataprovider.py
index fdb3714fc..ce1b480f9 100644
--- a/freqtrade/data/dataprovider.py
+++ b/freqtrade/data/dataprovider.py
@@ -30,7 +30,7 @@ class DataProvider(object):
         self._exchange.refresh_latest_ohlcv(pairlist)
 
     @property
-    def available_pairs(self) -> List[str]:
+    def available_pairs(self) -> List[Tuple[str, str]]:
         """
         Return a list of tuples containing pair, tick_interval for which data is currently cached.
         Should be whitelist + open trades.
diff --git a/freqtrade/tests/data/test_dataprovider.py b/freqtrade/tests/data/test_dataprovider.py
index 89b709572..834ff94b5 100644
--- a/freqtrade/tests/data/test_dataprovider.py
+++ b/freqtrade/tests/data/test_dataprovider.py
@@ -60,4 +60,4 @@ def test_available_pairs(mocker, default_conf, ticker_history):
     dp = DataProvider(default_conf, exchange)
 
     assert len(dp.available_pairs) == 2
-    assert dp.available_pairs == ['XRP/BTC', 'UNITTEST/BTC']
+    assert dp.available_pairs == [('XRP/BTC', tick_interval), ('UNITTEST/BTC', tick_interval)]