diff --git a/IPython/core/interactiveshell.py b/IPython/core/interactiveshell.py
index 3484cba..a8376ac 100644
--- a/IPython/core/interactiveshell.py
+++ b/IPython/core/interactiveshell.py
@@ -2419,9 +2419,9 @@ class InteractiveShell(SingletonConfigurable):
         dname = os.path.dirname(fname)
 
         with prepended_to_syspath(dname):
-	    # Ensure that __file__ is always defined to match Python behavior
-	    save_fname = self.user_ns.get('__file__',None)
-	    self.user_ns['__file__'] = fname
+            # Ensure that __file__ is always defined to match Python behavior
+            save_fname = self.user_ns.get('__file__',None)
+            self.user_ns['__file__'] = fname
             try:
                 py3compat.execfile(fname,*where)
             except SystemExit, status:
@@ -2470,9 +2470,9 @@ class InteractiveShell(SingletonConfigurable):
         dname = os.path.dirname(fname)
 
         with prepended_to_syspath(dname):
-	    # Ensure that __file__ is always defined to match Python behavior
-	    save_fname = self.user_ns.get('__file__',None)
-	    self.user_ns['__file__'] = fname
+            # Ensure that __file__ is always defined to match Python behavior
+            save_fname = self.user_ns.get('__file__',None)
+            self.user_ns['__file__'] = fname
             try:
                 with open(fname) as thefile:
                     # self.run_cell currently captures all exceptions
diff --git a/IPython/core/shellapp.py b/IPython/core/shellapp.py
index 7f3f0df..7414e6a 100644
--- a/IPython/core/shellapp.py
+++ b/IPython/core/shellapp.py
@@ -278,11 +278,11 @@ class InteractiveShellApp(Configurable):
         try:
             if os.path.isfile(full_filename):
                 self.log.info("Running file in user namespace: %s" % full_filename)
-		if full_filename.endswith('.ipy'):
-		    self.shell.safe_execfile_ipy(full_filename)
-		else:
-		    # default to python, even without extension
-		    self.shell.safe_execfile(full_filename, self.shell.user_ns)
+                if full_filename.endswith('.ipy'):
+                    self.shell.safe_execfile_ipy(full_filename)
+                else:
+                    # default to python, even without extension
+                    self.shell.safe_execfile(full_filename, self.shell.user_ns)
         finally:
             sys.argv = save_argv