diff --git a/IPython/nbconvert/exporters/export.py b/IPython/nbconvert/exporters/export.py
index fcc4f0f..895579b 100644
--- a/IPython/nbconvert/exporters/export.py
+++ b/IPython/nbconvert/exporters/export.py
@@ -18,6 +18,7 @@ from functools import wraps
 from IPython.nbformat.v3.nbbase import NotebookNode
 from IPython.config import Config
 
+from .exporter import Exporter
 from .templateexporter import TemplateExporter
 from .html import HTMLExporter
 from .slides import SlidesExporter