diff --git a/freqtrade/data/dataprovider.py b/freqtrade/data/dataprovider.py
index a035b7c3b..b4dea0743 100644
--- a/freqtrade/data/dataprovider.py
+++ b/freqtrade/data/dataprovider.py
@@ -170,6 +170,6 @@ class DataProvider:
         """
 
         if self._pairlists:
-            return self._pairlists.whitelist
+            return self._pairlists.whitelist.copy()
         else:
             raise OperationalException("Dataprovider was not initialized with a pairlist provider.")