diff --git a/test/test_color.py b/test/test_color.py
index 94e8014..d3d843a 100644
--- a/test/test_color.py
+++ b/test/test_color.py
@@ -24,7 +24,7 @@ def test_gradient() -> None:
     """
     Test color picking from gradient.
     """
-    assert (
-        get_gradient_color(0.5, MinMax(0, 1), [Color("black"), Color("white")])
-        == Color("#7F7F7F")
+    color: Color = get_gradient_color(
+        0.5, MinMax(0, 1), [Color("black"), Color("white")]
     )
+    assert color == Color("#7F7F7F")
diff --git a/test/test_flinger.py b/test/test_flinger.py
index 25ca25c..a647ad1 100644
--- a/test/test_flinger.py
+++ b/test/test_flinger.py
@@ -3,9 +3,7 @@ Test coordinates computation.
 """
 import numpy as np
 
-from roentgen.flinger import (
-    osm_zoom_level_to_pixels_per_meter, pseudo_mercator
-)
+from roentgen.flinger import osm_zoom_level_to_pixels_per_meter, pseudo_mercator
 
 __author__ = "Sergey Vartanov"
 __email__ = "me@enzet.ru"
diff --git a/test/test_tag.py b/test/test_tag.py
index eb1d994..e5b365a 100644
--- a/test/test_tag.py
+++ b/test/test_tag.py
@@ -25,7 +25,7 @@ def test_meters() -> None:
     check_length("50m", 50.0)
     check_length("50.m", 50.0)
     check_length("50.05m", 50.05)
-    check_length(".05m", .05)
+    check_length(".05m", 0.05)
     check_length(".m", None)
     check_length("50   m", 50.0)