diff --git a/IPython/nbconvert/nbconvertapp.py b/IPython/nbconvert/nbconvertapp.py
index 08bc0b8..370b2b3 100755
--- a/IPython/nbconvert/nbconvertapp.py
+++ b/IPython/nbconvert/nbconvertapp.py
@@ -63,8 +63,7 @@ nbconvert_aliases.update({
     'writer' : 'NbConvertApp.writer_class',
     'post': 'NbConvertApp.postprocessor_class',
     'output': 'NbConvertApp.output_base',
-    'offline-slides': 'RevealHelpPreprocessor.url_prefix',
-    'slide-notes': 'RevealHelpPreprocessor.speaker_notes'
+    'reveal-prefix': 'RevealHelpPreprocessor.url_prefix',
 })
 
 nbconvert_flags = {}