diff --git a/collider_conversion/regenerate_name.py b/collider_conversion/regenerate_name.py
index 1603fa9..d80eba3 100644
--- a/collider_conversion/regenerate_name.py
+++ b/collider_conversion/regenerate_name.py
@@ -27,13 +27,22 @@ def poll(cls, context):
 
     def execute(self, context):
         prefs = context.preferences.addons[__package__.split('.')[0]].preferences
-
+        count = 0
         for obj in context.selected_objects.copy():
 
             # skip if invalid object
-            if obj is None or obj.type != "MESH":
+            if obj is None:
+                continue
+
+            if obj.type != "MESH":
                 continue
 
+            if not obj.get('isCollider'):
+                continue
+
+            # count how many objects are renamed
+            count = count + 1
+
             if prefs.replace_name:
                 basename = prefs.obj_basename
             elif obj.parent:
@@ -50,4 +59,8 @@ def execute(self, context):
             obj.name = new_name
             OBJECT_OT_add_bounding_object.set_data_name(obj, new_name, "_data")
 
+        # Show warning if no object is found to rename
+        if count == 0:
+            self.report({'WARNING'}, 'No collider to rename')
+
         return {'FINISHED'}