diff --git a/CHANGELOG b/CHANGELOG
index bf80bc16..69d9fabf 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,5 @@
+v1.8.1. Fix memcached bug: https://bugs.launchpad.net/libmemcached/+bug/442914
+
 v1.8.0. Add support for multi-entry CAS (fbogsany).
 	Make rails client .delete method more consistent with other APIs
 
diff --git a/ext/libmemcached-0.32/libmemcached/memcached_purge.c b/ext/libmemcached-0.32/libmemcached/memcached_purge.c
index 40c8ad61..9e5e31ab 100644
--- a/ext/libmemcached-0.32/libmemcached/memcached_purge.c
+++ b/ext/libmemcached-0.32/libmemcached/memcached_purge.c
@@ -10,7 +10,7 @@ memcached_return memcached_purge(memcached_server_st *ptr)
   if (ptr->root->purging || /* already purging */
       (memcached_server_response_count(ptr) < ptr->root->io_msg_watermark &&
       ptr->io_bytes_sent < ptr->root->io_bytes_watermark) ||
-      (ptr->io_bytes_sent > ptr->root->io_bytes_watermark &&
+      (ptr->io_bytes_sent >= ptr->root->io_bytes_watermark &&
       memcached_server_response_count(ptr) < 2))
   {
     return MEMCACHED_SUCCESS;
diff --git a/lib/memcached/version.rb b/lib/memcached/version.rb
index d558b812..acf2d493 100644
--- a/lib/memcached/version.rb
+++ b/lib/memcached/version.rb
@@ -1,3 +1,3 @@
 class Memcached
-  VERSION = '1.8.0'
+  VERSION = '1.8.1'
 end