diff --git a/freqtrade/data/dataprovider.py b/freqtrade/data/dataprovider.py
index 9b9c73e55..c6f9c9c88 100644
--- a/freqtrade/data/dataprovider.py
+++ b/freqtrade/data/dataprovider.py
@@ -32,7 +32,7 @@ class DataProvider(object):
     @property
     def available_pairs(self) -> List[str]:
         """
-        Return a list of pairs for which data is currently cached.
+        Return a list of tuples containing pair, tick_interval for which data is currently cached.
         Should be whitelist + open trades.
         """
         return list(self._exchange._klines.keys())
diff --git a/freqtrade/exchange/__init__.py b/freqtrade/exchange/__init__.py
index 21eab39d4..1fff1c1b5 100644
--- a/freqtrade/exchange/__init__.py
+++ b/freqtrade/exchange/__init__.py
@@ -579,7 +579,7 @@ class Exchange(object):
         """
         try:
             # fetch ohlcv asynchronously
-            logger.debug("fetching %s since %s ...", pair, since_ms)
+            logger.debug("fetching %s, %s since %s ...", pair, tick_interval, since_ms)
 
             data = await self._api_async.fetch_ohlcv(pair, timeframe=tick_interval,
                                                      since=since_ms)
diff --git a/freqtrade/tests/test_freqtradebot.py b/freqtrade/tests/test_freqtradebot.py
index ca6190ae4..ef2815bed 100644
--- a/freqtrade/tests/test_freqtradebot.py
+++ b/freqtrade/tests/test_freqtradebot.py
@@ -43,7 +43,7 @@ def patch_get_signal(freqtrade: FreqtradeBot, value=(True, False)) -> None:
     :return: None
     """
     freqtrade.strategy.get_signal = lambda e, s, t: value
-    freqtrade.exchange.refresh_latest_ohlcv = lambda p, i: None
+    freqtrade.exchange.refresh_latest_ohlcv = lambda p: None
 
 
 def patch_RPCManager(mocker) -> MagicMock:
diff --git a/scripts/plot_dataframe.py b/scripts/plot_dataframe.py
index 8f3e8327a..8c0793174 100755
--- a/scripts/plot_dataframe.py
+++ b/scripts/plot_dataframe.py
@@ -138,8 +138,8 @@ def plot_analyzed_dataframe(args: Namespace) -> None:
     tickers = {}
     if args.live:
         logger.info('Downloading pair.')
-        exchange.refresh_latest_ohlcv([pair], tick_interval)
-        tickers[pair] = exchange.klines(pair)
+        exchange.refresh_latest_ohlcv([(pair, tick_interval)])
+        tickers[pair] = exchange.klines((pair, tick_interval))
     else:
         tickers = history.load_data(
             datadir=Path(_CONF.get("datadir")),