diff --git a/tests/selenium/test_heat_map_selenium.py b/tests/selenium/test_heat_map_selenium.py
index 5a02ddb0e..1578943a1 100644
--- a/tests/selenium/test_heat_map_selenium.py
+++ b/tests/selenium/test_heat_map_selenium.py
@@ -35,4 +35,6 @@ def test_heat_map_with_weights(driver):
     path = os.path.dirname(__file__)
     with open(os.path.join(path, 'test_heat_map_selenium_screenshot.png'), 'rb') as f:
         screenshot_expected = f.read()
+    if not hash(screenshot) == hash(screenshot_expected):
+        print(screenshot)
     assert hash(screenshot) == hash(screenshot_expected)