diff --git a/rshell/main.py b/rshell/main.py
index 478c0b5..eff7cf4 100755
--- a/rshell/main.py
+++ b/rshell/main.py
@@ -64,7 +64,7 @@
 
 import readline
 import rlcompleter
-if 'libedit' in readline.__doc__:
+if readline.__doc__ and 'libedit' in readline.__doc__:
     readline.parse_and_bind ("bind ^I rl_complete")
     BROKEN_READLINE = True
 else:
diff --git a/setup.py b/setup.py
index 5cbb512..a39a31a 100644
--- a/setup.py
+++ b/setup.py
@@ -41,7 +41,9 @@
     install_requires=[
         'pyserial',
         'pyudev >= 0.16',
-    ],
+    ] + ([
+        'pyreadline',
+    ] if 'win' in sys.platform else []),
     entry_points = {
         'console_scripts': [
             'pyboard=rshell.pyboard:main',