diff --git a/.gitignore b/.gitignore
index 9d8b83b..6239466 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,7 @@
 !/.gitignore
 !/.github
 !/.ruff.toml
+__pycache__
 /dist
 /tests/data/result
 /python/cykooz/resizer/*.so
diff --git a/tests/test_alpha.py b/tests/test_alpha.py
index 40adeb9..7d64af1 100644
--- a/tests/test_alpha.py
+++ b/tests/test_alpha.py
@@ -47,7 +47,7 @@ def test_multiply_alpha_pil(
     mul_div = AlphaMulDiv()
     mul_div.cpu_extensions = cpu_extensions
     if mul_div.cpu_extensions != cpu_extensions:
-        raise pytest.skip(f'{cpu_extensions} instruction not supported by CPU')
+        raise pytest.skip(f'{cpu_extensions.name} instruction not supported by CPU')
 
     image = source_image.copy()
     assert get_image_checksum(image.tobytes('raw')) == Checksum(
@@ -106,7 +106,7 @@ def test_divide_alpha_pil(
     mul_div = AlphaMulDiv()
     mul_div.cpu_extensions = cpu_extensions
     if mul_div.cpu_extensions != cpu_extensions:
-        raise pytest.skip(f'{cpu_extensions} instruction not supported by CPU')
+        raise pytest.skip(f'{cpu_extensions.name} instruction not supported by CPU')
 
     image = source_image.copy()
     if image.mode != 'RGBa':
diff --git a/tests/test_resizer.py b/tests/test_resizer.py
index 8d6e0ce..58ddb4e 100644
--- a/tests/test_resizer.py
+++ b/tests/test_resizer.py
@@ -94,7 +94,7 @@ def _resize_raw(
     resizer = Resizer()
     resizer.cpu_extensions = cpu_extensions
     if resizer.cpu_extensions != cpu_extensions:
-        raise pytest.skip(f'{cpu_extensions} instruction not supported by CPU')
+        raise pytest.skip(f'{cpu_extensions.name} instruction not supported by CPU')
 
     resizer.resize(
         src_image,
@@ -124,7 +124,7 @@ def _resize_pil(
     resizer = Resizer()
     resizer.cpu_extensions = cpu_extensions
     if resizer.cpu_extensions != cpu_extensions:
-        raise pytest.skip(f'{cpu_extensions} instruction not supported by CPU')
+        raise pytest.skip(f'{cpu_extensions.name} instruction not supported by CPU')
 
     resizer.resize_pil(
         src_image,