diff --git a/doc/configuration.txt b/doc/configuration.txt
index e12713226..a2132d5cc 100644
--- a/doc/configuration.txt
+++ b/doc/configuration.txt
@@ -3956,6 +3956,7 @@ HTTP_URL_ABS     url_reg ^[^/:]*://            match absolute URL with scheme
 HTTP_URL_SLASH   url_beg /                     match URL begining with "/"
 HTTP_URL_STAR    url     *                     match URL equal to "*"
 HTTP_CONTENT     hdr_val(content-length) gt 0  match an existing content-length
+REQ_CONTENT      req_len gt 0                  match data in the request buffer
 ---------------+-----------------------------+---------------------------------
 
 
diff --git a/src/acl.c b/src/acl.c
index 6385c6fd4..983c0c558 100644
--- a/src/acl.c
+++ b/src/acl.c
@@ -758,6 +758,7 @@ const struct {
 	{ .name = "HTTP_URL_SLASH", .expr = {"url_beg","/",""}},
 	{ .name = "HTTP_URL_STAR",  .expr = {"url","*",""}},
 	{ .name = "HTTP_CONTENT",   .expr = {"hdr_val(content-length)","gt","0",""}},
+	{ .name = "REQ_CONTENT",    .expr = {"req_len","gt","0",""}},
 	{ .name = NULL, .expr = {""}}
 };