diff --git a/tests/test_recog.py b/tests/test_recog.py
index 6eed0eb..21966a5 100644
--- a/tests/test_recog.py
+++ b/tests/test_recog.py
@@ -1,6 +1,7 @@
 """Module with library tests"""
 from pathlib import Path
 import pytest
+import math
 import pygats.recog as rec
 import pygats.pygats as pyg
 from pygats.formatters import MarkdownFormatter as MD
@@ -99,4 +100,4 @@ def test_check_text_1(words_for_bg, capsys):
 def test_contrast(img_path, expected_value):
     img = Image.open(img_path)
     contrast = rec.contrast(img)
-    assert (contrast - expected_value) < 1e-9
+    assert math.isclose(contrast, expected_value, rel_tol=1e-09, abs_tol=0.0)