diff --git a/crosstl/src/backend/DirectX/DirectxAst.py b/crosstl/src/backend/DirectX/DirectxAst.py
index f0900f1..ac88d52 100644
--- a/crosstl/src/backend/DirectX/DirectxAst.py
+++ b/crosstl/src/backend/DirectX/DirectxAst.py
@@ -94,6 +94,7 @@ def __init__(self, condition, body):
     def __repr__(self):
         return f"WhileNode(condition={self.condition}, body={self.body})"
 
+
 class DoWhileNode(ASTNode):
     def __init__(self, condition, body):
         self.condition = condition
@@ -102,6 +103,7 @@ def __init__(self, condition, body):
     def __repr__(self):
         return f"DoWhileNode(condition={self.condition}, body={self.body})"
 
+
 class ReturnNode(ASTNode):
     def __init__(self, value):
         self.value = value
diff --git a/tests/test_backend/test_directx/test_codegen.py b/tests/test_backend/test_directx/test_codegen.py
index 8f66ecc..29eddfe 100644
--- a/tests/test_backend/test_directx/test_codegen.py
+++ b/tests/test_backend/test_directx/test_codegen.py
@@ -209,6 +209,7 @@ def test_while_codegen():
     except SyntaxError:
         pytest.fail("While loop parsing or code generation not implemented.")
 
+
 def test_do_while_codegen():
     code = """
     struct VSInput {
diff --git a/tests/test_backend/test_directx/test_parser.py b/tests/test_backend/test_directx/test_parser.py
index 6ab507f..d36590a 100644
--- a/tests/test_backend/test_directx/test_parser.py
+++ b/tests/test_backend/test_directx/test_parser.py
@@ -93,6 +93,7 @@ def test_while_parsing():
     except SyntaxError:
         pytest.fail("while parsing not implemented")
 
+
 def test_do_while_parsing():
     code = """
     VSOutput VSMain(VSInput input) {