diff --git a/freqtrade/resolvers/exchange_resolver.py b/freqtrade/resolvers/exchange_resolver.py
index b834ad242..62e89f445 100644
--- a/freqtrade/resolvers/exchange_resolver.py
+++ b/freqtrade/resolvers/exchange_resolver.py
@@ -39,7 +39,7 @@ class ExchangeResolver(IResolver):
                                            object_name=exchange_name,
                                            kwargs=kwargs)
             if exchange:
-                logger.info('Using resolved exchange %s from \'%s\'', exchange_name, abs_path)
+                logger.info("Using resolved exchange %s from '%s'", exchange_name, abs_path)
                 return exchange
         except FileNotFoundError:
             logger.warning('Path "%s" does not exist', abs_path.relative_to(Path.cwd()))
diff --git a/freqtrade/resolvers/hyperopt_resolver.py b/freqtrade/resolvers/hyperopt_resolver.py
index 6bf7fa17d..e7683bc78 100644
--- a/freqtrade/resolvers/hyperopt_resolver.py
+++ b/freqtrade/resolvers/hyperopt_resolver.py
@@ -63,7 +63,7 @@ class HyperOptResolver(IResolver):
                 hyperopt = self._search_object(directory=_path, object_type=IHyperOpt,
                                                object_name=hyperopt_name)
                 if hyperopt:
-                    logger.info('Using resolved hyperopt %s from \'%s\'', hyperopt_name, _path)
+                    logger.info("Using resolved hyperopt %s from '%s'", hyperopt_name, _path)
                     return hyperopt
             except FileNotFoundError:
                 logger.warning('Path "%s" does not exist', _path.relative_to(Path.cwd()))
diff --git a/freqtrade/resolvers/iresolver.py b/freqtrade/resolvers/iresolver.py
index aee292926..852d1dc0c 100644
--- a/freqtrade/resolvers/iresolver.py
+++ b/freqtrade/resolvers/iresolver.py
@@ -47,7 +47,7 @@ class IResolver(object):
         :param directory: relative or absolute directory path
         :return: object instance
         """
-        logger.debug('Searching for %s %s in \'%s\'', object_type.__name__, object_name, directory)
+        logger.debug("Searching for %s %s in '%s'", object_type.__name__, object_name, directory)
         for entry in directory.iterdir():
             # Only consider python files
             if not str(entry).endswith('.py'):
diff --git a/freqtrade/resolvers/pairlist_resolver.py b/freqtrade/resolvers/pairlist_resolver.py
index 286cea5bf..4306a9669 100644
--- a/freqtrade/resolvers/pairlist_resolver.py
+++ b/freqtrade/resolvers/pairlist_resolver.py
@@ -48,7 +48,7 @@ class PairListResolver(IResolver):
                                                object_name=pairlist_name,
                                                kwargs=kwargs)
                 if pairlist:
-                    logger.info('Using resolved pairlist %s from \'%s\'', pairlist_name, _path)
+                    logger.info("Using resolved pairlist %s from '%s'", pairlist_name, _path)
                     return pairlist
             except FileNotFoundError:
                 logger.warning('Path "%s" does not exist', _path.relative_to(Path.cwd()))
diff --git a/freqtrade/resolvers/strategy_resolver.py b/freqtrade/resolvers/strategy_resolver.py
index 01467b0a1..c49da9205 100644
--- a/freqtrade/resolvers/strategy_resolver.py
+++ b/freqtrade/resolvers/strategy_resolver.py
@@ -149,7 +149,7 @@ class StrategyResolver(IResolver):
                 strategy = self._search_object(directory=_path, object_type=IStrategy,
                                                object_name=strategy_name, kwargs={'config': config})
                 if strategy:
-                    logger.info('Using resolved strategy %s from \'%s\'', strategy_name, _path)
+                    logger.info("Using resolved strategy %s from '%s'", strategy_name, _path)
                     strategy._populate_fun_len = len(
                         getfullargspec(strategy.populate_indicators).args)
                     strategy._buy_fun_len = len(getfullargspec(strategy.populate_buy_trend).args)