diff --git a/src/library_analyzer/processing/api/purity_analysis/_get_module_data.py b/src/library_analyzer/processing/api/purity_analysis/_get_module_data.py
index c8b5fe2a..daa991e1 100644
--- a/src/library_analyzer/processing/api/purity_analysis/_get_module_data.py
+++ b/src/library_analyzer/processing/api/purity_analysis/_get_module_data.py
@@ -708,7 +708,8 @@ def enter_functiondef(self, node: astroid.FunctionDef) -> None:
                     return
                 elif isinstance(decorator, astroid.Name) and decorator.name == "property":
                     if isinstance(self.current_node_stack[-1], ClassScope) and hasattr(
-                        self.current_node_stack[-1], "instance_variables",
+                        self.current_node_stack[-1],
+                        "instance_variables",
                     ):
                         self.current_node_stack[-1].instance_variables.setdefault(node.name, []).append(
                             InstanceVariable(