diff --git a/lib/orbit_tag/taggable.rb b/lib/orbit_tag/taggable.rb
index 2b3c2919..7a52f5f0 100644
--- a/lib/orbit_tag/taggable.rb
+++ b/lib/orbit_tag/taggable.rb
@@ -58,7 +58,7 @@ module OrbitTag
       end
 
       def tag_ids
-        self.tags.map{|t| t.tag.id}
+        self.tags.map{|t| t.id}
       end
 
       def tag_ids=(ids)