diff --git a/IPython/core/interactiveshell.py b/IPython/core/interactiveshell.py
index be0e932..02855c9 100644
--- a/IPython/core/interactiveshell.py
+++ b/IPython/core/interactiveshell.py
@@ -1102,7 +1102,7 @@ class InteractiveShell(SingletonConfigurable):
         # Now that FakeModule produces a real module, we've run into a nasty
         # problem: after script execution (via %run), the module where the user
         # code ran is deleted.  Now that this object is a true module (needed
-        # so docetst and other tools work correctly), the Python module
+        # so doctest and other tools work correctly), the Python module
         # teardown mechanism runs over it, and sets to None every variable
         # present in that module.  Top-level references to objects from the
         # script survive, because the user_ns is updated with them.  However,
@@ -1216,7 +1216,7 @@ class InteractiveShell(SingletonConfigurable):
         # user_ns, and we sync that contents into user_ns_hidden so that these
         # initial variables aren't shown by %who.  After the sync, we add the
         # rest of what we *do* want the user to see with %who even on a new
-        # session (probably nothing, so theye really only see their own stuff)
+        # session (probably nothing, so they really only see their own stuff)
 
         # The user dict must *always* have a __builtin__ reference to the
         # Python standard __builtin__ namespace,  which must be imported.
@@ -2079,7 +2079,7 @@ class InteractiveShell(SingletonConfigurable):
 
         This creates completion machinery that can be used by client code,
         either interactively in-process (typically triggered by the readline
-        library), programatically (such as in test suites) or out-of-prcess
+        library), programmatically (such as in test suites) or out-of-process
         (typically over the network by remote frontends).
         """
         from IPython.core.completer import IPCompleter
@@ -3290,7 +3290,7 @@ class InteractiveShell(SingletonConfigurable):
 
           A string specifying code to retrieve. This will be tried respectively
           as: ranges of input history (see %history for syntax), url,
-          correspnding .py file, filename, or an expression evaluating to a
+          corresponding .py file, filename, or an expression evaluating to a
           string or Macro in the user namespace.
 
         raw : bool