diff --git a/src/backend.c b/src/backend.c
index 37a67c904..05fefcdf3 100644
--- a/src/backend.c
+++ b/src/backend.c
@@ -1235,6 +1235,7 @@ int connect_server(struct stream *s)
 			old_conn = srv_conn;
 		} else {
 			srv_conn = NULL;
+			srv_cs = NULL;
 			si_release_endpoint(&s->si[1]);
 		}
 	}