diff --git a/inc/Maat_rule.h b/inc/Maat_rule.h
index a9fed65..655ec82 100644
--- a/inc/Maat_rule.h
+++ b/inc/Maat_rule.h
@@ -144,7 +144,7 @@ enum MAAT_INIT_OPT
 	MAAT_OPT_PERF_ON,					//VALUE is indifferent,SIZE is indifferent.MAAT_OPT_STAT_FILE_PATH must be set.Default: stat OFF.
 	MAAT_OPT_STAT_FILE_PATH,			//VALUE is a const char*,MUST end with '\0',SIZE= strlen(string+'\0')+1.DEFAULT: no default.
 	MAAT_OPT_SCAN_DETAIL				//VALUE is interger,SIZE=sizeof(int). 0: not return any detail;1: return  hit pos, not include regex grouping;
-										//  2 return hit pos and regex grouping pos;DEFAULT:2
+										//  2 return hit pos and regex grouping pos;DEFAULT:0
 };
 //return -1 if failed, return 0 on success;
 int Maat_set_feather_opt(Maat_feather_t feather,enum MAAT_INIT_OPT  type,const void* value,int size);