diff --git a/inc/Maat_rule.h b/inc/Maat_rule.h
index 752fb5e..e9444d6 100644
--- a/inc/Maat_rule.h
+++ b/inc/Maat_rule.h
@@ -30,7 +30,8 @@ enum MAAT_CHARSET
 	CHARSET_UNICODE_NCR_DEC,		//SGML Numeric character reference,decimal base, e.g. "ا"
 	CHARSET_UNICODE_NCR_HEX,		//SGML Numeric character reference,hexdecimal base, e.g. "ا"
 	CHARSET_URL_ENCODE_GB2312,		//URL encode with GB2312, e.g. the chinese word "china" was encoded to %D6%D0%B9%FA
-	CHARSET_URL_ENCODE_UTF8		//11, URL encode with UTF8,e.g. the chinese word "china" was encoded to %E4%B8%AD%E5%9B%BD
+	CHARSET_URL_ENCODE_UTF8,		//11, URL encode with UTF8,e.g. the chinese word "china" was encoded to %E4%B8%AD%E5%9B%BD
+	CHARSET_WINDOWS1251
 };
 enum MAAT_ACTION
 {
diff --git a/src/entry/Maat_rule.cpp b/src/entry/Maat_rule.cpp
index 9c08b90..90373d3 100644
--- a/src/entry/Maat_rule.cpp
+++ b/src/entry/Maat_rule.cpp
@@ -235,6 +235,7 @@ int universal_charset_convert(struct Maat_scanner* scanner,enum MAAT_CHARSET fro
 		case CHARSET_BIG5:
 		case CHARSET_UNICODE:
 		case CHARSET_UTF8:
+		case CHARSET_WINDOWS1251:
 			ret=iconv_convert(scanner,from,to,src,srclen,dst,dstlen);
 			return ret;
 			break;
diff --git a/src/entry/Maat_utils.cpp b/src/entry/Maat_utils.cpp
index 892fe09..3d40912 100644
--- a/src/entry/Maat_utils.cpp
+++ b/src/entry/Maat_utils.cpp
@@ -242,7 +242,7 @@ char* md5_file(const char* filename, char* md5string)
 	return md5string;
 }
 const char* CHARSET_STRING[]={"NONE","gbk","big5","unicode","utf8","bin",
-							"unicode_ascii_esc","unicode_ascii_aligned","unicode_ncr_dec","unicode_ncr_hex","url_encode_gb2312","url_encode_utf8",""};
+							"unicode_ascii_esc","unicode_ascii_aligned","unicode_ncr_dec","unicode_ncr_hex","url_encode_gb2312","url_encode_utf8", "windows-1251", ""};
 
 const char** charset_get_all_name(void)
 {