diff --git a/io_scene_psk_psa/psa/builder.py b/io_scene_psk_psa/psa/builder.py
index f476a4e..54198b0 100644
--- a/io_scene_psk_psa/psa/builder.py
+++ b/io_scene_psk_psa/psa/builder.py
@@ -59,7 +59,7 @@ def _get_pose_bone_location_and_rotation(
 
     if is_false_root_bone:
         pose_bone_matrix = coordinate_system_transform
-    elif pose_bone.parent is not None:
+    elif pose_bone is not None and pose_bone.parent is not None:
         pose_bone_matrix = pose_bone.matrix
         pose_bone_parent_matrix = pose_bone.parent.matrix
         pose_bone_matrix = pose_bone_parent_matrix.inverted() @ pose_bone_matrix
diff --git a/io_scene_psk_psa/shared/helpers.py b/io_scene_psk_psa/shared/helpers.py
index e5395ae..d5462a5 100644
--- a/io_scene_psk_psa/shared/helpers.py
+++ b/io_scene_psk_psa/shared/helpers.py
@@ -13,8 +13,6 @@ def rgb_to_srgb(c: float) -> float:
 
 
 def get_nla_strips_in_frame_range(animation_data: AnimData, frame_min: float, frame_max: float):
-    if animation_data is None:
-        return
     for nla_track in animation_data.nla_tracks:
         if nla_track.mute:
             continue