diff --git a/src/entry/Maat_command.cpp b/src/entry/Maat_command.cpp
index 1482f70..9e3b606 100644
--- a/src/entry/Maat_command.cpp
+++ b/src/entry/Maat_command.cpp
@@ -381,7 +381,6 @@ int get_rm_key_list(unsigned int version,redisContext *c,struct serial_rule_t**
 		return -1;
 	}
 	version_in_redis=read_redis_integer(reply);
-	assert(version_in_redis>=version);
 	freeReplyObject(reply);
 	if(version_in_redis==version)
 	{		
@@ -389,8 +388,10 @@ int get_rm_key_list(unsigned int version,redisContext *c,struct serial_rule_t**
 	}
 	*new_version=version_in_redis;
 
-	if(version==0)
+	if(version_in_redis<version)
 	{
+		MESA_handle_runtime_log(logger, RLOG_LV_INFO, maat_redis_monitor,
+				"VERSION roll back MAAT: %d -> Redis: %lld.",version,version_in_redis);
 		goto FULL_UPDATE;
 	}
 
diff --git a/src/entry/Maat_rule.cpp b/src/entry/Maat_rule.cpp
index 28e5931..e2115c4 100644
--- a/src/entry/Maat_rule.cpp
+++ b/src/entry/Maat_rule.cpp
@@ -28,7 +28,7 @@
 #include "stream_fuzzy_hash.h"
 #include "gram_index_engine.h"
 
-int MAAT_FRAME_VERSION_2_0_20170829=1;
+int MAAT_FRAME_VERSION_2_0_20170831=1;
 const char *maat_module="MAAT Frame";
 
 const char* CHARSET_STRING[]={"NONE","gbk","big5","unicode","utf8","bin",