diff --git a/io_anim_nuke_chan/__init__.py b/io_anim_nuke_chan/__init__.py
index 48da8b1d0bd26ca5f47f040857c719ec86d243b4..fe5f4738a7729a088eb4a63e3b2dbec7c0804006 100644
--- a/io_anim_nuke_chan/__init__.py
+++ b/io_anim_nuke_chan/__init__.py
@@ -76,7 +76,7 @@ class ImportChan(Operator, ImportHelper):
 
     filter_glob: StringProperty(default="*.chan", options={'HIDDEN'})
 
-    rotation_order = rotation_order
+    rotation_order: rotation_order
     z_up: BoolProperty(
             name="Make Z up",
             description="Switch the Y and Z axis",
@@ -118,7 +118,7 @@ class ExportChan(Operator, ExportHelper):
             name="Make Y up",
             description="Switch the Y and Z axis",
             default=True)
-    rotation_order = rotation_order
+    rotation_order: rotation_order
 
     @classmethod
     def poll(cls, context):