diff --git a/ichor_core/ichor/core/files/points_directory.py b/ichor_core/ichor/core/files/points_directory.py
index 7fb786e3..f38ad3a8 100644
--- a/ichor_core/ichor/core/files/points_directory.py
+++ b/ichor_core/ichor/core/files/points_directory.py
@@ -103,7 +103,7 @@ def _parse(self) -> None:
         # wrap the new directory as a PointDirectory instance and add to self
         # sort by the names of the directories (by the numbers in their name)
         # since the system name is always the same
-        self = self.sort(key=lambda x: x.path.name)
+        self.sort(key=lambda x: x.path.name)
 
     @property
     def raw_data(self) -> dict:
diff --git a/ichor_core/ichor/core/files/points_directory_parent.py b/ichor_core/ichor/core/files/points_directory_parent.py
index 35a7de58..620a1655 100644
--- a/ichor_core/ichor/core/files/points_directory_parent.py
+++ b/ichor_core/ichor/core/files/points_directory_parent.py
@@ -43,7 +43,7 @@ def _parse(self):
         # wrap the new directory as a PointDirectory instance and add to self
         # sort by the names of the directories (by the numbers in their name)
         # since the system name is always the same
-        self = self.sort(key=lambda x: x.path.name)
+        self.sort(key=lambda x: x.path.name)
 
     @property
     def raw_data(self) -> dict: