diff --git a/src/proto_http.c b/src/proto_http.c
index bab3db5d8..ef5a15ccb 100644
--- a/src/proto_http.c
+++ b/src/proto_http.c
@@ -6853,6 +6853,9 @@ http_msg_forward_body(struct stream *s, struct http_msg *msg)
 	if (msg->next)
 		goto waiting;
 
+	if (unlikely(!(chn->flags & CF_WROTE_DATA) || msg->sov > 0))
+		msg->sov -= ret;
+
 	FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg),
 			 /* default_ret */ 1,
 			 /* on_error    */ goto error,
@@ -6968,6 +6971,9 @@ http_msg_forward_chunked_body(struct stream *s, struct http_msg *msg)
 	if (msg->next)
 		goto waiting;
 
+	if (unlikely(!(chn->flags & CF_WROTE_DATA) || msg->sov > 0))
+		msg->sov -= ret;
+
 	FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg),
 		    /* default_ret */ 1,
 		    /* on_error    */ goto error,