diff --git a/src/http_htx.c b/src/http_htx.c
index bc26e5ba4..cd19d8f8b 100644
--- a/src/http_htx.c
+++ b/src/http_htx.c
@@ -629,6 +629,9 @@ static struct htx *http_str_to_htx(struct buffer *buf, struct ist raw)
 	    ((*(h1sl.st.v.ptr + 5) == '1') && (*(h1sl.st.v.ptr + 7) >= '1')))
 		h1m.flags |= H1_MF_VER_11;
 
+	if (h1sl.st.status < 200 && (h1sl.st.status == 100 || h1sl.st.status >= 102))
+		goto error;
+
 	if (h1m.flags & H1_MF_VER_11)
 		flags |= HTX_SL_F_VER_11;
 	if (h1m.flags & H1_MF_XFER_ENC)
@@ -656,8 +659,10 @@ static struct htx *http_str_to_htx(struct buffer *buf, struct ist raw)
 			goto error;
 		ret += sent;
 	}
+
 	if (!htx_add_endof(htx, HTX_BLK_EOM))
 		goto error;
+
 	return htx;
 
 error:
diff --git a/src/proto_htx.c b/src/proto_htx.c
index d821e38cc..6cbd33b9b 100644
--- a/src/proto_htx.c
+++ b/src/proto_htx.c
@@ -2650,7 +2650,7 @@ static int htx_reply_103_early_hints(struct channel *res)
 	struct htx *htx = htx_from_buf(&res->buf);
 	size_t data;
 
-	if (!htx_add_endof(htx, HTX_BLK_EOH) || !htx_add_endof(htx, HTX_BLK_EOM)) {
+	if (!htx_add_endof(htx, HTX_BLK_EOH)) {
 		/* If an error occurred during an Early-hint rule,
 		 * remove the incomplete HTTP 103 response from the
 		 * buffer */
@@ -5443,7 +5443,7 @@ static int htx_reply_100_continue(struct stream *s)
 		goto fail;
 	sl->info.res.status = 100;
 
-	if (!htx_add_endof(htx, HTX_BLK_EOH) || !htx_add_endof(htx, HTX_BLK_EOM))
+	if (!htx_add_endof(htx, HTX_BLK_EOH))
 		goto fail;
 
 	data = htx->data - co_data(res);