diff --git a/dkimpy_milter/util.py b/dkimpy_milter/util.py
index 5d3f69d..57b433c 100644
--- a/dkimpy_milter/util.py
+++ b/dkimpy_milter/util.py
@@ -151,7 +151,7 @@ def own_socketfile(milterconfig):
     import os
     user, group = user_group(milterconfig.get('UserID'))
     if milterconfig.get('Socket')[:1] == '/':
-        os.chown(milterconfig.get('Socket')[1:], user, group)
+        os.chown(milterconfig.get('Socket'), user, group)
     if milterconfig.get('Socket')[:6] == "local:":
         os.chown(milterconfig.get('Socket')[6:], user, group)