diff --git a/src/proto_http.c b/src/proto_http.c
index 3ae46bce6..fd298b781 100644
--- a/src/proto_http.c
+++ b/src/proto_http.c
@@ -3544,7 +3544,7 @@ int http_process_request(struct session *s, struct buffer *req, int an_bit)
 		struct hdr_ctx ctx = { .idx = 0 };
 
 		if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
-		    http_find_header2("X-Forwarded-For", 15, txn->req.sol, &txn->hdr_idx, &ctx)) {
+		    http_find_header2(s->be->fwdfor_hdr_name, s->be->fwdfor_hdr_len, txn->req.sol, &txn->hdr_idx, &ctx)) {
 			/* The header is set to be added only if none is present
 			 * and we found it, so don't do anything.
 			 */