diff --git a/testguide_report_generator/model/TestCase.py b/testguide_report_generator/model/TestCase.py
index eb112e1..3d96cc0 100644
--- a/testguide_report_generator/model/TestCase.py
+++ b/testguide_report_generator/model/TestCase.py
@@ -273,7 +273,7 @@ def set_defect(self, defect: str):
         self.__defect = defect
         return self
 
-    def set_defect_priority(self, priority: str | None):
+    def set_defect_priority(self, priority: str):
         """
         Set the defect priority.