diff --git a/app/serializers/custom_metadata_type_serializer.rb b/app/serializers/custom_metadata_type_serializer.rb
index e7f54db631..db672815b3 100644
--- a/app/serializers/custom_metadata_type_serializer.rb
+++ b/app/serializers/custom_metadata_type_serializer.rb
@@ -14,7 +14,6 @@ def get_custom_metadata_attribute(attribute)
       "title": attribute.title,
       "label": attribute.label,
       "description":attribute.description,
-      "label":attribute.label,
       "sample_attribute_type": get_sample_attribute_type(attribute),
       "required": attribute.required,
       "pos": attribute.pos,