diff --git a/fatamorgana/main.py b/fatamorgana/main.py
index 1df23f4..f514040 100644
--- a/fatamorgana/main.py
+++ b/fatamorgana/main.py
@@ -38,7 +38,7 @@ class FileModals:
     end_has_offset_table: bool = False
     started: bool = False
 
-    def __init__(self, property_target = List[records.Property]):
+    def __init__(self, property_target: List[records.Property]):
         self.property_target = property_target