diff --git a/input.c b/input.c
index f8e95e19..a0775741 100644
--- a/input.c
+++ b/input.c
@@ -2571,8 +2571,8 @@ input_dcs_dispatch(struct input_ctx *ictx)
 	}
 
 #ifdef ENABLE_SIXEL
-	w = wp->window;
-	if (buf[0] == 'q' && ictx->interm_len == 0) {
+	if (wp != NULL && buf[0] == 'q' && ictx->interm_len == 0) {
+		w = wp->window;
 		if (input_split(ictx) != 0)
 			return (0);
 		p2 = input_get(ictx, 1, 0, 0);