diff --git a/screen-write.c b/screen-write.c
index 476fe4dd..a2107f2a 100644
--- a/screen-write.c
+++ b/screen-write.c
@@ -1505,8 +1505,10 @@ screen_write_fullredraw(struct screen_write_ctx *ctx)
 
 	screen_write_collect_flush(ctx, 0, __func__);
 
-	screen_write_initctx(ctx, &ttyctx, 1);
-	ttyctx.redraw_cb(&ttyctx);
+	if (ttyctx.redraw_cb != NULL) {
+		screen_write_initctx(ctx, &ttyctx, 1);
+		ttyctx.redraw_cb(&ttyctx);
+	}
 }
 
 /* Trim collected items. */
@@ -2127,8 +2129,10 @@ screen_write_alternateon(struct screen_write_ctx *ctx, struct grid_cell *gc,
 	screen_write_collect_flush(ctx, 0, __func__);
 	screen_alternate_on(ctx->s, gc, cursor);
 
-	screen_write_initctx(ctx, &ttyctx, 1);
-	ttyctx.redraw_cb(&ttyctx);
+	if (ttyctx.redraw_cb != NULL) {
+		screen_write_initctx(ctx, &ttyctx, 1);
+		ttyctx.redraw_cb(&ttyctx);
+	}
 }
 
 /* Turn alternate screen off. */
@@ -2145,6 +2149,8 @@ screen_write_alternateoff(struct screen_write_ctx *ctx, struct grid_cell *gc,
 	screen_write_collect_flush(ctx, 0, __func__);
 	screen_alternate_off(ctx->s, gc, cursor);
 
-	screen_write_initctx(ctx, &ttyctx, 1);
-	ttyctx.redraw_cb(&ttyctx);
+	if (ttyctx.redraw_cb != NULL) {
+		screen_write_initctx(ctx, &ttyctx, 1);
+		ttyctx.redraw_cb(&ttyctx);
+	}
 }