diff --git a/screen-write.c b/screen-write.c
index 05315b3f..e58d744c 100644
--- a/screen-write.c
+++ b/screen-write.c
@@ -994,7 +994,9 @@ screen_write_cell(struct screen_write_ctx *ctx, const struct grid_cell *gc)
 		utf8_copy(&tmp_gc.data, &gc->data);
 		tmp_gc.attr = tmp_gc.attr & ~GRID_ATTR_CHARSET;
 		tmp_gc.attr |= gc->attr & GRID_ATTR_CHARSET;
-		tmp_gc.flags = gc->flags & ~(GRID_FLAG_FG256|GRID_FLAG_BG256);
+		tmp_gc.flags = gc->flags;
+		tmp_gc.flags &= ~(GRID_FLAG_FGRGB|GRID_FLAG_BGRGB);
+		tmp_gc.flags &= ~(GRID_FLAG_FG256|GRID_FLAG_BG256);
 		tmp_gc.flags |= s->sel.cell.flags &
 		    (GRID_FLAG_FG256|GRID_FLAG_BG256);
 		ttyctx.cell = &tmp_gc;