diff --git a/lib/charty/table_adapters/pandas_adapter.rb b/lib/charty/table_adapters/pandas_adapter.rb
index 5ce59e55..73ed45d9 100644
--- a/lib/charty/table_adapters/pandas_adapter.rb
+++ b/lib/charty/table_adapters/pandas_adapter.rb
@@ -199,7 +199,7 @@ def apply(*args, &block)
           res = @groupby.apply(->(data) {
             res = block.call(Charty::Table.new(data), *args)
             Pandas::Series.new(data: res)
-          })
+          }, include_groups: false)
           Charty::Table.new(res)
         end