diff --git a/lib/active_admin/axlsx/builder.rb b/lib/active_admin/axlsx/builder.rb
index 6fb28ad..ef44235 100644
--- a/lib/active_admin/axlsx/builder.rb
+++ b/lib/active_admin/axlsx/builder.rb
@@ -74,7 +74,7 @@ def i18n_scope
 
       # This is the I18n scope that will be used when looking up your
       # colum names in the current I18n locale.
-      # If you set it to [:active_admin, :resources, :posts] the 
+      # If you set it to [:active_admin, :resources, :posts] the
       # serializer will render the value at active_admin.resources.posts.title in the
       # current translations
       # @note If you do not set this, the column name will be titleized.
@@ -129,6 +129,7 @@ def delete_columns(*column_names)
       # Serializes the collection provided
       # @return [Axlsx::Package]
       def serialize(collection)
+        reset_sheet
         @collection = collection
         apply_filter @before_filter
         export_collection(collection)
@@ -172,6 +173,10 @@ def export_collection(collection)
         end
       end
 
+      def reset_sheet
+        @package, @sheet = nil
+      end
+
       # tranform column names into array of localized strings
       # @return [Array]
       def header_row(collection)