diff --git a/IPython/core/magics/basic.py b/IPython/core/magics/basic.py
index d442d8c..f45e541 100644
--- a/IPython/core/magics/basic.py
+++ b/IPython/core/magics/basic.py
@@ -27,6 +27,7 @@ from IPython.utils.text import format_screen, dedent, indent
 from IPython.testing.skipdoctest import skip_doctest
 from IPython.utils.ipstruct import Struct
 from IPython.utils.path import unquote_filename
+from IPython.utils.py3compat import unicode_type
 from IPython.utils.warn import warn, error
 
 #-----------------------------------------------------------------------------
@@ -599,7 +600,7 @@ Defaulting color scheme to 'NoColor'"""
              'format. The filename argument gives the name of the source file.'
     )
     @magic_arguments.argument(
-        'filename', type=unicode,
+        'filename', type=unicode_type,
         help='Notebook name or filename'
     )
     @line_magic
diff --git a/IPython/core/magics/osm.py b/IPython/core/magics/osm.py
index 1a048ac..e6cad68 100644
--- a/IPython/core/magics/osm.py
+++ b/IPython/core/magics/osm.py
@@ -36,6 +36,7 @@ from IPython.testing.skipdoctest import skip_doctest
 from IPython.utils.openpy import source_to_unicode
 from IPython.utils.path import unquote_filename
 from IPython.utils.process import abbrev_cwd
+from IPython.utils.py3compat import unicode_type
 from IPython.utils.terminal import set_term_title
 
 #-----------------------------------------------------------------------------
@@ -714,7 +715,7 @@ class OSMagics(Magics):
              'The file will be created if it does not exist.'
     )
     @magic_arguments.argument(
-        'filename', type=unicode,
+        'filename', type=unicode_type,
         help='file to write'
     )
     @cell_magic