diff --git a/IPython/nbconvert/exporters/exporter.py b/IPython/nbconvert/exporters/exporter.py
index 7f24021..b1126b4 100644
--- a/IPython/nbconvert/exporters/exporter.py
+++ b/IPython/nbconvert/exporters/exporter.py
@@ -68,7 +68,6 @@ class Exporter(LoggingConfigurable):
                                  nbpreprocessors.CSSHTMLHeaderPreprocessor,
                                  nbpreprocessors.RevealHelpPreprocessor,
                                  nbpreprocessors.LatexPreprocessor,
-                                 nbpreprocessors.SphinxPreprocessor,
                                  nbpreprocessors.HighlightMagicsPreprocessor],
         config=True,
         help="""List of preprocessors available by default, by name, namespace, 
diff --git a/IPython/nbconvert/preprocessors/__init__.py b/IPython/nbconvert/preprocessors/__init__.py
index a99e762..3062c79 100755
--- a/IPython/nbconvert/preprocessors/__init__.py
+++ b/IPython/nbconvert/preprocessors/__init__.py
@@ -5,7 +5,6 @@ from .svg2pdf import SVG2PDFPreprocessor
 from .extractoutput import ExtractOutputPreprocessor
 from .revealhelp import RevealHelpPreprocessor
 from .latex import LatexPreprocessor
-from .sphinx import SphinxPreprocessor
 from .csshtmlheader import CSSHTMLHeaderPreprocessor
 from .highlightmagics import HighlightMagicsPreprocessor