diff --git a/src/mux_h2.c b/src/mux_h2.c
index 03c15e5..12da9af 100644
--- a/src/mux_h2.c
+++ b/src/mux_h2.c
@@ -6143,9 +6143,10 @@
 	htx_to_buf(htx, buf);
 
 	if (total > 0) {
-		if (!(h2s->h2c->wait_event.events & SUB_RETRY_SEND))
+		if (!(h2s->h2c->wait_event.events & SUB_RETRY_SEND)) {
 			TRACE_DEVEL("data queued, waking up h2c sender", H2_EV_H2S_SEND|H2_EV_H2C_SEND, h2s->h2c->conn, h2s);
 			tasklet_wakeup(h2s->h2c->wait_event.tasklet);
+		}
 
 	}
 	/* If we're waiting for flow control, and we got a shutr on the