diff --git a/window.c b/window.c
index 67d047b9..cfb44ae3 100644
--- a/window.c
+++ b/window.c
@@ -948,7 +948,7 @@ window_pane_read_callback(__unused struct bufferevent *bufev, void *data)
 
 	new_size = EVBUFFER_LENGTH(evb) - wp->pipe_off;
 	if (wp->pipe_fd != -1 && new_size > 0) {
-		new_data = EVBUFFER_DATA(evb);
+		new_data = EVBUFFER_DATA(evb) + wp->pipe_off;
 		bufferevent_write(wp->pipe_event, new_data, new_size);
 	}