diff --git a/src/tcpcheck.c b/src/tcpcheck.c
index 07d16aa5d..288bd19d7 100644
--- a/src/tcpcheck.c
+++ b/src/tcpcheck.c
@@ -1459,12 +1459,18 @@ enum tcpcheck_eval_ret tcpcheck_eval_send(struct check *check, struct tcpcheck_r
 		}
 		else
 			body = send->http.body;
-		clen = ist((!istlen(body) ? "0" : ultoa(istlen(body))));
 
-		if ((!connection_hdr && !htx_add_header(htx, ist("Connection"), ist("close"))) ||
-		    !htx_add_header(htx, ist("Content-length"), clen))
+		if (!connection_hdr && !htx_add_header(htx, ist("Connection"), ist("close")))
 			goto error_htx;
 
+		if ((send->http.meth.meth != HTTP_METH_OPTIONS &&
+		     send->http.meth.meth != HTTP_METH_GET &&
+		     send->http.meth.meth != HTTP_METH_HEAD &&
+		     send->http.meth.meth != HTTP_METH_DELETE) || istlen(body)) {
+			clen = ist((!istlen(body) ? "0" : ultoa(istlen(body))));
+			if (!htx_add_header(htx, ist("Content-length"), clen))
+				goto error_htx;
+		}
 
 		if (!htx_add_endof(htx, HTX_BLK_EOH) ||
 		    (istlen(body) && !htx_add_data_atonce(htx, body)))