diff --git a/src/flt_http_comp.c b/src/flt_http_comp.c
index 37f237f..ac3bd08 100644
--- a/src/flt_http_comp.c
+++ b/src/flt_http_comp.c
@@ -201,19 +201,17 @@
 {
 	struct comp_state *st = filter->ctx;
 	struct htx *htx = htxbuf(&msg->chn->buf);
+	struct htx_ret htxret = htx_find_offset(htx, offset);
 	struct htx_blk *blk;
 	int ret, consumed = 0, to_forward = 0;
 
-	for (blk = htx_get_first_blk(htx); blk && len; blk = htx_get_next_blk(htx, blk)) {
+	blk = htxret.blk;
+	offset = htxret.ret;
+	for (; blk && len; blk = htx_get_next_blk(htx, blk)) {
 		enum htx_blk_type type = htx_get_blk_type(blk);
 		uint32_t sz = htx_get_blksz(blk);
 		struct ist v;
 
-		if (offset >= sz) {
-			offset -= sz;
-			continue;
-		}
-
 		switch (type) {
 			case HTX_BLK_UNUSED:
 				break;