diff --git a/COPYING.txt b/COPYING.txt
index 7274fbf..387ca76 100644
--- a/COPYING.txt
+++ b/COPYING.txt
@@ -1,3 +1,3 @@
-See COPYING.txt distributed with iPython.
+See COPYING.txt distributed with IPython.
 
 #TODO, give NBCONVERT its own license
\ No newline at end of file
diff --git a/nbconvert/exporters/markdown.py b/nbconvert/exporters/markdown.py
index 4ae42e1..4699b96 100644
--- a/nbconvert/exporters/markdown.py
+++ b/nbconvert/exporters/markdown.py
@@ -1,5 +1,5 @@
 """
-Exporter that will export your iPynb to Markdown.
+Exporter that will export your ipynb to Markdown.
 """
 #-----------------------------------------------------------------------------
 # Copyright (c) 2013, the IPython Development Team.
diff --git a/nbconvert/transformers/base.py b/nbconvert/transformers/base.py
index 652cc9a..d8af8d9 100755
--- a/nbconvert/transformers/base.py
+++ b/nbconvert/transformers/base.py
@@ -1,5 +1,5 @@
 """
-Module that re-groups transformer that would be applied to iPyNB files
+Module that re-groups transformer that would be applied to ipynb files
 before going through the templating machinery.
 
 It exposes a convenient class to inherit from to access configurability.
@@ -35,7 +35,7 @@ class ConfigurableTransformer(GlobalConfigurable):
     using c.SubClassName.atribute=value
 
     you can overwrite cell_transform to apply a transformation independently on each cell
-    or __call__ if you prefer your own logic. See orresponding docstring for informations.
+    or __call__ if you prefer your own logic. See corresponding docstring for informations.
     """
     
     def __init__(self, config=None, **kw):
diff --git a/nbconvert/transformers/csshtmlheader.py b/nbconvert/transformers/csshtmlheader.py
index 9cab33b..dd18e45 100755
--- a/nbconvert/transformers/csshtmlheader.py
+++ b/nbconvert/transformers/csshtmlheader.py
@@ -75,14 +75,14 @@ class CSSHtmlHeaderTransformer(ActivatableTransformer):
 
     def _regen_header(self):
         """ 
-        Fills self.header with lines of CSS extracted from iPython 
+        Fills self.header with lines of CSS extracted from IPython 
         and Pygments.
         """
         
         #Clear existing header.
         header = []
         
-        #Construct path to iPy CSS
+        #Construct path to IPy CSS
         sheet_filename = os.path.join(path.get_ipython_package_dir(), 
             'html', 'static', 'style', 'style.min.css')
         
@@ -93,7 +93,7 @@ class CSSHtmlHeaderTransformer(ActivatableTransformer):
                 header.append(file_text)
         except IOError:
             
-            # New version of iPython with style.min.css, pass
+            # New version of IPython with style.min.css, pass
             pass
 
         #Add pygments CSS
diff --git a/nbconvert/transformers/sphinx.py b/nbconvert/transformers/sphinx.py
index 51bcd31..21217ff 100755
--- a/nbconvert/transformers/sphinx.py
+++ b/nbconvert/transformers/sphinx.py
@@ -226,7 +226,7 @@ class SphinxTransformer(ActivatableTransformer):
     
     def _prompt_output_style(self):
         """
-        Prompts the user to pick an iPython output style.
+        Prompts the user to pick an IPython output style.
         """
         
         # Dictionary of available output styles