diff --git a/__init__.py b/__init__.py
index ebb6834..77a0df3 100644
--- a/__init__.py
+++ b/__init__.py
@@ -30,6 +30,9 @@ class dsplSettings(bpy.types.PropertyGroup):
 
 classes = dsplSettings
 
+def pose_libraries_poll(self, action):
+    if getattr(action, "pose_markers", None):
+        return True
 
 def register():
     from bpy.utils import register_class
@@ -37,7 +40,8 @@ def register():
 
     bpy.types.Object.pose_library = bpy.props.PointerProperty(
         name="Active Pose Library", description="",
-        type=bpy.types.Action, override={'LIBRARY_OVERRIDABLE'})
+        type=bpy.types.Action, override={'LIBRARY_OVERRIDABLE'},
+        poll=pose_libraries_poll)
 
     bpy.types.Scene.dsplSettings = bpy.props.PointerProperty(
         type=dsplSettings, override={'LIBRARY_OVERRIDABLE'})
@@ -51,6 +55,7 @@ def unregister():
     unregister_class(dsplSettings)
 
     del bpy.types.Scene.dsplSettings
+    del bpy.types.Object.pose_library
 
     keymaps.unregister()
     operators.unregister()