diff --git a/rshell/main.py b/rshell/main.py
index 40071f5..3cd33ed 100755
--- a/rshell/main.py
+++ b/rshell/main.py
@@ -850,7 +850,13 @@ def add_suffix_if_dir(filename):
             # This can happen when a symlink points to a non-existant file.
             pass
         return filename
-    if not os.path.isdir(dirname):
+    def isdir(path):
+        try:
+            mode = os.stat(path)[0]
+            return mode & 0o040000
+        except OSError:
+            return False
+    if not isdir(dirname):
         return []
     matches = [add_suffix_if_dir(result_prefix + filename)
                for filename in os.listdir(dirname) if filename.startswith(match_prefix)]
diff --git a/rshell/version.py b/rshell/version.py
index d9edf17..9ae29b1 100644
--- a/rshell/version.py
+++ b/rshell/version.py
@@ -1 +1 @@
-__version__ = '0.0.33'
+__version__ = '0.0.34'
diff --git a/setup.py b/setup.py
index 1652e55..be4be84 100644
--- a/setup.py
+++ b/setup.py
@@ -50,6 +50,6 @@
     },
     extras_require={
         ':sys_platform == "win32"': [
-            'pyreadline']
+            'pyreadline3']
     }
 )