diff --git a/freqtrade/exchange/__init__.py b/freqtrade/exchange/__init__.py
index 11836ed4e..ae07e36e9 100644
--- a/freqtrade/exchange/__init__.py
+++ b/freqtrade/exchange/__init__.py
@@ -277,7 +277,7 @@ class Exchange(object):
         try:
             # Set the precision for amount and price(rate) as accepted by the exchange
             amount = self.symbol_amount_prec(pair, amount)
-            rate = self.symbol_price_prec(pair, rate)
+            rate = self.symbol_price_prec(pair, rate) if ordertype != 'market' else None
 
             return self._api.create_order(pair, ordertype, 'buy', amount, rate)
         except ccxt.InsufficientFunds as e:
@@ -314,7 +314,7 @@ class Exchange(object):
         try:
             # Set the precision for amount and price(rate) as accepted by the exchange
             amount = self.symbol_amount_prec(pair, amount)
-            rate = self.symbol_price_prec(pair, rate)
+            rate = self.symbol_price_prec(pair, rate) if ordertype != 'market' else None
 
             return self._api.create_order(pair, ordertype, 'sell', amount, rate)
         except ccxt.InsufficientFunds as e:
diff --git a/freqtrade/tests/exchange/test_exchange.py b/freqtrade/tests/exchange/test_exchange.py
index 10644a9be..207f14efe 100644
--- a/freqtrade/tests/exchange/test_exchange.py
+++ b/freqtrade/tests/exchange/test_exchange.py
@@ -419,18 +419,28 @@ def test_buy_prod(default_conf, mocker):
         }
     })
     default_conf['dry_run'] = False
+    mocker.patch('freqtrade.exchange.Exchange.symbol_amount_prec', lambda s, x, y: y)
+    mocker.patch('freqtrade.exchange.Exchange.symbol_price_prec', lambda s, x, y: y)
     exchange = get_patched_exchange(mocker, default_conf, api_mock)
 
     order = exchange.buy(pair='ETH/BTC', ordertype=order_type, amount=1, rate=200)
     assert 'id' in order
     assert 'info' in order
     assert order['id'] == order_id
+    assert api_mock.create_order.call_args[0][0] == 'ETH/BTC'
     assert api_mock.create_order.call_args[0][1] == order_type
+    assert api_mock.create_order.call_args[0][2] == 'buy'
+    assert api_mock.create_order.call_args[0][3] == 1
+    assert api_mock.create_order.call_args[0][4] is None
 
     api_mock.create_order.reset_mock()
     order_type = 'limit'
     order = exchange.buy(pair='ETH/BTC', ordertype=order_type, amount=1, rate=200)
+    assert api_mock.create_order.call_args[0][0] == 'ETH/BTC'
     assert api_mock.create_order.call_args[0][1] == order_type
+    assert api_mock.create_order.call_args[0][2] == 'buy'
+    assert api_mock.create_order.call_args[0][3] == 1
+    assert api_mock.create_order.call_args[0][4] == 200
 
     # test exception handling
     with pytest.raises(DependencyException):
@@ -476,17 +486,27 @@ def test_sell_prod(default_conf, mocker):
     default_conf['dry_run'] = False
 
     exchange = get_patched_exchange(mocker, default_conf, api_mock)
+    mocker.patch('freqtrade.exchange.Exchange.symbol_amount_prec', lambda s, x, y: y)
+    mocker.patch('freqtrade.exchange.Exchange.symbol_price_prec', lambda s, x, y: y)
 
     order = exchange.sell(pair='ETH/BTC', ordertype=order_type, amount=1, rate=200)
     assert 'id' in order
     assert 'info' in order
     assert order['id'] == order_id
+    assert api_mock.create_order.call_args[0][0] == 'ETH/BTC'
     assert api_mock.create_order.call_args[0][1] == order_type
+    assert api_mock.create_order.call_args[0][2] == 'sell'
+    assert api_mock.create_order.call_args[0][3] == 1
+    assert api_mock.create_order.call_args[0][4] is None
 
     api_mock.create_order.reset_mock()
     order_type = 'limit'
     order = exchange.sell(pair='ETH/BTC', ordertype=order_type, amount=1, rate=200)
+    assert api_mock.create_order.call_args[0][0] == 'ETH/BTC'
     assert api_mock.create_order.call_args[0][1] == order_type
+    assert api_mock.create_order.call_args[0][2] == 'sell'
+    assert api_mock.create_order.call_args[0][3] == 1
+    assert api_mock.create_order.call_args[0][4] == 200
 
     # test exception handling
     with pytest.raises(DependencyException):