diff --git a/apiserver/plane/app/serializers/cycle.py b/apiserver/plane/app/serializers/cycle.py
index 53ce8bf27db..efc0f8f8b2d 100644
--- a/apiserver/plane/app/serializers/cycle.py
+++ b/apiserver/plane/app/serializers/cycle.py
@@ -21,9 +21,9 @@ def validate(self, data):
             and data.get("end_date", None) is not None
         ):
             project_id = (
-                self.initial_data.get("project_id")
-                or self.instance.project_id
-                or self.context.get("project_id")
+                self.initial_data.get("project_id", None)
+                or (self.instance and self.instance.get("project_id", None))
+                or self.context.get("project_id", None)
             )
             is_start_date_end_date_equal = (
                 True