diff --git a/src/proxy.c b/src/proxy.c
index af4809fe9..1abb780e6 100644
--- a/src/proxy.c
+++ b/src/proxy.c
@@ -1471,6 +1471,7 @@ int stream_set_backend(struct stream *s, struct proxy *be)
 					s->flags |= SF_IGNORE;
 					return 0;
 				}
+				s->flags |= SF_HTX;
 			}
 		}