diff --git a/tests/rpc/test_rpc.py b/tests/rpc/test_rpc.py
index e179ec9da..d2ea1ffde 100644
--- a/tests/rpc/test_rpc.py
+++ b/tests/rpc/test_rpc.py
@@ -19,15 +19,6 @@ from tests.conftest import (create_mock_trades, create_mock_trades_usdt, get_pat
                             patch_get_signal)
 
 
-# Functions for recurrent object patching
-def prec_satoshi(a, b) -> float:
-    """
-    :return: True if A and B differs less than one satoshi.
-    """
-    return abs(a - b) < 0.00000001
-
-
-# Unit tests
 def test_rpc_trade_status(default_conf, ticker, fee, mocker) -> None:
     gen_response = {
         'trade_id': 1,
@@ -544,8 +535,8 @@ def test_rpc_balance_handle(default_conf, mocker, tickers):
     rpc._fiat_converter = CryptoToFiatConverter()
 
     result = rpc._rpc_balance(default_conf['stake_currency'], default_conf['fiat_display_currency'])
-    assert prec_satoshi(result['total'], 30.30909624)
-    assert prec_satoshi(result['value'], 454636.44360691)
+    assert pytest.approx(result['total']) ==  30.30909624
+    assert pytest.approx(result['value']) == 454636.44360691
     assert tickers.call_count == 1
     assert tickers.call_args_list[0][1]['cached'] is True
     assert 'USD' == result['symbol']
@@ -866,17 +857,17 @@ def test_enter_tag_performance_handle_2(mocker, default_conf, markets, fee):
     assert len(res) == 2
     assert res[0]['enter_tag'] == 'TEST1'
     assert res[0]['count'] == 1
-    assert prec_satoshi(res[0]['profit_pct'], 0.5)
+    assert pytest.approx(res[0]['profit_pct']) == 0.5
     assert res[1]['enter_tag'] == 'Other'
     assert res[1]['count'] == 1
-    assert prec_satoshi(res[1]['profit_pct'], 1.0)
+    assert pytest.approx(res[1]['profit_pct']) == 1.0
 
     # Test for a specific pair
     res = rpc._rpc_enter_tag_performance('ETC/BTC')
     assert len(res) == 1
     assert res[0]['count'] == 1
     assert res[0]['enter_tag'] == 'TEST1'
-    assert prec_satoshi(res[0]['profit_pct'], 0.5)
+    assert pytest.approx(res[0]['profit_pct']) == 0.5
 
 
 def test_exit_reason_performance_handle(default_conf_usdt, ticker, fee, mocker) -> None:
@@ -922,17 +913,17 @@ def test_exit_reason_performance_handle_2(mocker, default_conf, markets, fee):
     assert len(res) == 2
     assert res[0]['exit_reason'] == 'sell_signal'
     assert res[0]['count'] == 1
-    assert prec_satoshi(res[0]['profit_pct'], 0.5)
+    assert pytest.approx(res[0]['profit_pct']) == 0.5
     assert res[1]['exit_reason'] == 'roi'
     assert res[1]['count'] == 1
-    assert prec_satoshi(res[1]['profit_pct'], 1.0)
+    assert pytest.approx(res[1]['profit_pct']) == 1.0
 
     # Test for a specific pair
     res = rpc._rpc_exit_reason_performance('ETC/BTC')
     assert len(res) == 1
     assert res[0]['count'] == 1
     assert res[0]['exit_reason'] == 'sell_signal'
-    assert prec_satoshi(res[0]['profit_pct'], 0.5)
+    assert pytest.approx(res[0]['profit_pct']) == 0.5
 
 
 def test_mix_tag_performance_handle(default_conf, ticker, fee, mocker) -> None:
@@ -975,10 +966,10 @@ def test_mix_tag_performance_handle_2(mocker, default_conf, markets, fee):
     assert len(res) == 2
     assert res[0]['mix_tag'] == 'TEST1 sell_signal'
     assert res[0]['count'] == 1
-    assert prec_satoshi(res[0]['profit_pct'], 0.5)
+    assert pytest.approx(res[0]['profit_pct']) == 0.5
     assert res[1]['mix_tag'] == 'Other roi'
     assert res[1]['count'] == 1
-    assert prec_satoshi(res[1]['profit_pct'], 1.0)
+    assert pytest.approx(res[1]['profit_pct']) == 1.0
 
     # Test for a specific pair
     res = rpc._rpc_mix_tag_performance('ETC/BTC')
@@ -986,7 +977,7 @@ def test_mix_tag_performance_handle_2(mocker, default_conf, markets, fee):
     assert len(res) == 1
     assert res[0]['count'] == 1
     assert res[0]['mix_tag'] == 'TEST1 sell_signal'
-    assert prec_satoshi(res[0]['profit_pct'], 0.5)
+    assert pytest.approx(res[0]['profit_pct']) == 0.5
 
 
 def test_rpc_count(mocker, default_conf, ticker, fee) -> None: