diff --git a/offlineimap/utils/distro.py b/offlineimap/utils/distro.py
index 00e21e9..da9f21c 100644
--- a/offlineimap/utils/distro.py
+++ b/offlineimap/utils/distro.py
@@ -48,7 +48,11 @@ def get_os_name():
     if OS.startswith('linux'):
         DISTRO = platform.linux_distribution()[0]
         if DISTRO:
-          OS = OS + "-%s" % DISTRO.split()[0].lower()
+            OS = OS + "-%s" % DISTRO.split()[0].lower()
+        # add archlinux manually, for more information
+        # see commit afb28d87af13a8e91e6115112b361e8ae8ac7167
+        if os.path.exists('/etc/arch-release'):
+            OS = "linux-arch"
 
     return OS