diff --git a/README b/README
index bdb1e2b..f57defb 100644
--- a/README
+++ b/README
@@ -17,7 +17,7 @@
 	If-Unmodified-Since, If-Modified-Since, Date, Accept-Encoding,
 	Accept-Language, Accept-Charset, Max-Forwards, If-Match,
 	If-None-Match, Last-Modified, Content-Length, Expires,
-	Content-Language, Content-Encoding, Allow, Host
+	Content-Language, Content-Encoding, Allow, Host, Accept
 
 Report Bugs
 	Create a ticket on the issue tracking interface of GitHub:
diff --git a/ngx_http_header_inspect.c b/ngx_http_header_inspect.c
index 5bbd96b..4ce71ad 100644
--- a/ngx_http_header_inspect.c
+++ b/ngx_http_header_inspect.c
@@ -36,6 +36,7 @@
 static ngx_int_t ngx_header_inspect_ifmatch_header(char* header, ngx_header_inspect_loc_conf_t *conf, ngx_log_t *log, ngx_str_t value);
 static ngx_int_t ngx_header_inspect_allow_header(ngx_header_inspect_loc_conf_t *conf, ngx_log_t *log, ngx_str_t value);
 static ngx_int_t ngx_header_inspect_host_header(ngx_header_inspect_loc_conf_t *conf, ngx_log_t *log, ngx_str_t value);
+static ngx_int_t ngx_header_inspect_accept_header(ngx_header_inspect_loc_conf_t *conf, ngx_log_t *log, ngx_str_t value);
 static ngx_int_t ngx_header_inspect_ifrange_header(ngx_header_inspect_loc_conf_t *conf, ngx_log_t *log, ngx_str_t value);
 static ngx_int_t ngx_header_inspect_date_header(ngx_header_inspect_loc_conf_t *conf, ngx_log_t *log, char *header, ngx_str_t value);
 static ngx_int_t ngx_header_inspect_process_request(ngx_http_request_t *r);
@@ -768,6 +769,66 @@
 	return NGX_OK;
 }
 
+static ngx_int_t ngx_header_inspect_parse_mediatype(u_char *data, ngx_uint_t maxlen, ngx_uint_t *len) {
+	ngx_uint_t i;
+	u_char d;
+	ngx_uint_t secondpart = 0;
+
+	if (maxlen < 1) {
+		*len = 0;
+		return NGX_ERROR;
+	}
+
+	/* TODO: check with RFC if single '*' is valid */
+//	if (data[0] == '*') {
+//		*len = 1;
+//		return NGX_OK;
+//	}
+
+	*len = 1;
+	for ( i = 0; i < maxlen; i++ ) {
+		d = data[i];
+		if ( d == '/' ) {
+			if ( i < 1 ) {
+				*len = 1;
+				return NGX_ERROR;
+			} else {
+				if ( secondpart == 0 ) {
+					secondpart = 1;
+					continue;
+				} else {
+					*len = i;
+					return NGX_ERROR;
+				}
+			}
+		}
+
+		if (
+			((d < '0') || (d > '9')) &&
+			((d < 'a') || (d > 'z')) &&
+			((d < 'A') || (d > 'Z')) &&
+			(d != '-') && (d != '_') &&
+			(d != '+') && (d != '.') &&
+			(d != ':') && (d != '*')
+			/* TODO: check with RFC which chars are valid */
+		) {
+			*len = i;
+			if (secondpart == 0) {
+				return NGX_ERROR;
+			} else {
+				return NGX_OK;
+			}
+		}
+	}
+
+	*len = i;
+	if (secondpart == 0) {
+		return NGX_ERROR;
+	} else {
+		return NGX_OK;
+	}
+}
+
 static ngx_int_t ngx_header_inspect_parse_charset(u_char *data, ngx_uint_t maxlen, ngx_uint_t *len) {
 	ngx_uint_t i;
 	u_char d;
@@ -1222,6 +1283,7 @@
 	return rc;
 
 }
+
 static ngx_int_t ngx_header_inspect_acceptencoding_header(ngx_header_inspect_loc_conf_t *conf, ngx_log_t *log, ngx_str_t value) {
 	ngx_int_t rc = NGX_AGAIN;
 	ngx_uint_t i = 0;
@@ -1298,6 +1360,83 @@
 	return rc;
 }
 
+static ngx_int_t ngx_header_inspect_accept_header(ngx_header_inspect_loc_conf_t *conf, ngx_log_t *log, ngx_str_t value) {
+	ngx_int_t rc = NGX_AGAIN;
+	ngx_uint_t i = 0;
+	ngx_uint_t v;
+
+	/* TODO: check with RFC if single '*' is valid */
+	if ((value.len == 0) || ((value.len == 1) && (value.data[0] == '*'))) {
+		return NGX_OK;
+	}
+
+	while ( i < value.len ) {
+		if (ngx_header_inspect_parse_mediatype(&(value.data[i]), value.len-i, &v) != NGX_OK) {
+			if ( conf->log ) {
+				ngx_log_error(NGX_LOG_ALERT, log, 0, "header_inspect: invalid media-type at position %d in Accept header \"%s\"", i, value.data);
+			}
+			rc = NGX_ERROR;
+			break;
+		}
+		i += v;
+		if ((value.data[i] == ' ') && (i < value.len)) {
+			i++;
+		}
+		if (i == value.len) {
+			rc = NGX_OK;
+			break;
+		}
+		if (value.data[i] == ';') {
+			i++;
+			if (i >= value.len) {
+				if ( conf->log ) {
+					ngx_log_error(NGX_LOG_ALERT, log, 0, "header_inspect: unexpected end of Accept header \"%s\"", value.data);
+				}
+				rc = NGX_ERROR;
+				break;
+			}
+			if ((value.data[i] == ' ') && (i < value.len)) {
+				i++;
+			}
+			if (ngx_header_inspect_parse_qvalue(&(value.data[i]), value.len-i, &v) != NGX_OK) {
+				if ( conf->log ) {
+					ngx_log_error(NGX_LOG_ALERT, log, 0, "header_inspect: invalid qvalue at position %d in Accept header \"%s\"", i, value.data);
+				}
+				rc = NGX_ERROR;
+				break;
+			}
+			i += v;
+			if ((value.data[i] == ' ') && (i < value.len)) {
+				i++;
+			}
+			if (i == value.len) {
+				rc = NGX_OK;
+				break;
+			}
+		}
+		if (value.data[i] != ',') {
+			if ( conf->log ) {
+				ngx_log_error(NGX_LOG_ALERT, log, 0, "header_inspect: illegal char at position %d in Accept header \"%s\"", i, value.data);
+			}
+			rc = NGX_ERROR;
+			break;
+		}
+		i++;
+		if ((value.data[i] == ' ') && (i < value.len)) {
+			i++;
+		}
+	}
+
+	if (rc == NGX_AGAIN) {
+		if ( conf->log ) {
+			ngx_log_error(NGX_LOG_ALERT, log, 0, "header_inspect: unexpected end of Accept header \"%s\"", value.data);
+		}
+		rc = NGX_ERROR;
+	}
+
+	return rc;
+}
+
 static ngx_int_t ngx_header_inspect_host_header(ngx_header_inspect_loc_conf_t *conf, ngx_log_t *log, ngx_str_t value) {
 	u_char d = '\0';
 	ngx_uint_t i = 0;
@@ -1476,6 +1615,8 @@
 	return NGX_OK;
 }
 
+
+
 static ngx_int_t ngx_header_inspect_process_request(ngx_http_request_t *r) {
 	ngx_header_inspect_loc_conf_t *conf;
 	ngx_table_elt_t *h;
@@ -1580,6 +1721,11 @@
 					if ((rc != NGX_OK) && conf->block) {
 						return NGX_HTTP_BAD_REQUEST;
 					}
+				} else if ((h[i].key.len == 6) && (ngx_strcmp("Accept", h[i].key.data) == 0) ) {
+					rc = ngx_header_inspect_accept_header(conf, r->connection->log, h[i].value);
+					if ((rc != NGX_OK) && conf->block) {
+						return NGX_HTTP_BAD_REQUEST;
+					}
 				} else {
 					/* TODO: support for other headers */
 					if (conf->log_uninspected) {