diff --git a/setup.py b/setup.py
index 2a9029e..5b25a42 100755
--- a/setup.py
+++ b/setup.py
@@ -55,7 +55,7 @@ setup(name="ldaptools",
       packages=find_packages('src'),
       package_dir={'': 'src'},
       include_package_data=True,
-      install_requires=['python-ldap'],
+      install_requires=['python-ldap', 'six'],
       entry_points={
           'console_scripts': ['ldapsync=ldaptools.ldapsync.cmd:main'],
       },
diff --git a/src/ldaptools/slapd.py b/src/ldaptools/slapd.py
index 53247f8..108e30a 100644
--- a/src/ldaptools/slapd.py
+++ b/src/ldaptools/slapd.py
@@ -13,6 +13,8 @@ except ImportError:
     from io import StringIO
 import atexit
 
+from six.moves.urllib.parse import quote
+
 from ldaptools.ldif_utils import ListLDIFParser
 from ldaptools.paged import PagedLDAPObject
 
@@ -118,7 +120,7 @@ olcAccess: {{0}}to *
         os.mkdir(self.config_dir)
         self.socket = os.path.join(self.slapd_dir, 'socket')
         if not ldap_url:
-            ldap_url = 'ldapi://%s' % self.socket.replace('/', '%2F')
+            ldap_url = 'ldapi://%s' % quote(self.socket, '')
         self.ldap_url = ldap_url
         config_context = config_context or {}
         extra_config = ''