diff --git a/freqtrade/exchange/exchange.py b/freqtrade/exchange/exchange.py
index 88022e19c..ef3bea537 100644
--- a/freqtrade/exchange/exchange.py
+++ b/freqtrade/exchange/exchange.py
@@ -1148,8 +1148,8 @@ class Exchange:
         else:
             limit_rate = stop_price * (2 - limit_price_pct)
 
-        bad_stop_price = ((stop_price <= limit_rate) if side ==
-                          "sell" else (stop_price >= limit_rate))
+        bad_stop_price = ((stop_price < limit_rate) if side ==
+                          "sell" else (stop_price > limit_rate))
         # Ensure rate is less than stop price
         if bad_stop_price:
             # This can for example happen if the stop / liquidation price is set to 0
diff --git a/tests/exchange/test_exchange.py b/tests/exchange/test_exchange.py
index bbf86744b..5fa2755d2 100644
--- a/tests/exchange/test_exchange.py
+++ b/tests/exchange/test_exchange.py
@@ -3492,14 +3492,22 @@ def test_stoploss_order_unsupported_exchange(default_conf, mocker):
 @pytest.mark.parametrize('side,ratio,expected', [
     ('sell', 0.99, 99.0),  # Default
     ('sell', 0.999, 99.9),
+    ('sell', 1, 100),
+    ('sell', 1.1, InvalidOrderException),
     ('buy', 0.99, 101.0),  # Default
     ('buy', 0.999, 100.1),
+    ('buy', 1, 100),
+    ('buy', 1.1, InvalidOrderException),
     ])
 def test__get_stop_limit_rate(default_conf_usdt, mocker, side, ratio, expected):
     exchange = get_patched_exchange(mocker, default_conf_usdt, id='binance')
 
     order_types = {'stoploss_on_exchange_limit_ratio': ratio}
-    assert exchange._get_stop_limit_rate(100, order_types, side) == expected
+    if isinstance(expected, type) and issubclass(expected, Exception):
+        with pytest.raises(expected):
+            exchange._get_stop_limit_rate(100, order_types, side)
+    else:
+        assert exchange._get_stop_limit_rate(100, order_types, side) == expected
 
 
 def test_merge_ft_has_dict(default_conf, mocker):