diff --git a/fatamorgana/test/test_files_cells.py b/fatamorgana/test/test_files_cells.py
index 59bc6d4..285bd08 100644
--- a/fatamorgana/test/test_files_cells.py
+++ b/fatamorgana/test/test_files_cells.py
@@ -113,7 +113,7 @@ def test_file_3() -> None:
 
     buf.seek(0)
     with pytest.raises(InvalidRecordError):
-        layout = OasisLayout.read(buf)
+        _layout = OasisLayout.read(buf)
 
 
 def write_file_4(buf: IO[bytes]) -> IO[bytes]:
@@ -226,7 +226,7 @@ def test_file_6() -> None:
     buf.seek(0)
 
     with pytest.raises(InvalidDataError):
-        layout = OasisLayout.read(buf)
+        _layout = OasisLayout.read(buf)
 
     #base_tests(layout)
     #assert len(layout.cellnames) == 2
diff --git a/fatamorgana/test/test_files_properties.py b/fatamorgana/test/test_files_properties.py
index 99bdc37..0100318 100644
--- a/fatamorgana/test/test_files_properties.py
+++ b/fatamorgana/test/test_files_properties.py
@@ -1065,7 +1065,7 @@ def test_file_8() -> None:
 
     buf.seek(0)
     with pytest.raises(InvalidDataError):
-        layout = OasisLayout.read(buf)
+        _layout = OasisLayout.read(buf)
 
 
 def test_file_9() -> None:
@@ -1075,4 +1075,4 @@ def test_file_9() -> None:
 
     buf.seek(0)
     with pytest.raises(InvalidDataError):
-        layout = OasisLayout.read(buf)
+        _layout = OasisLayout.read(buf)
diff --git a/fatamorgana/test/test_files_texts.py b/fatamorgana/test/test_files_texts.py
index 0d10744..2603691 100644
--- a/fatamorgana/test/test_files_texts.py
+++ b/fatamorgana/test/test_files_texts.py
@@ -494,7 +494,7 @@ def test_file_3() -> None:
 
     buf.seek(0)
     with pytest.raises(InvalidRecordError):
-        layout = OasisLayout.read(buf)
+        _layout = OasisLayout.read(buf)
 
 
 def write_file_4(buf: IO[bytes]) -> IO[bytes]:
@@ -567,7 +567,7 @@ def test_file_6() -> None:
 
     buf.seek(0)
     with pytest.raises(InvalidDataError):
-        layout = OasisLayout.read(buf)
+        _layout = OasisLayout.read(buf)
 
 
 def write_file_7(buf: IO[bytes]) -> IO[bytes]:
@@ -598,7 +598,7 @@ def test_file_7() -> None:
 
     buf.seek(0)
     with pytest.raises(InvalidDataError):
-        layout = OasisLayout.read(buf)
+        _layout = OasisLayout.read(buf)
 
 
 def write_file_8(buf: IO[bytes]) -> IO[bytes]:
@@ -629,7 +629,7 @@ def test_file_8() -> None:
 
     buf.seek(0)
     with pytest.raises(InvalidDataError):
-        layout = OasisLayout.read(buf)
+        _layout = OasisLayout.read(buf)
 
 
 def write_file_9(buf: IO[bytes]) -> IO[bytes]:
@@ -732,4 +732,4 @@ def test_file_11() -> None:
 
     buf.seek(0)
     with pytest.raises(InvalidDataError):
-        layout = OasisLayout.read(buf)
+        _layout = OasisLayout.read(buf)