diff --git a/src/lv_themes/lv_theme_material.c b/src/lv_themes/lv_theme_material.c
index 661db996d..f692b3b66 100644
--- a/src/lv_themes/lv_theme_material.c
+++ b/src/lv_themes/lv_theme_material.c
@@ -620,6 +620,9 @@ static void checkbox_init(void)
     lv_style_set_radius(&styles->cb_bullet, LV_STATE_DEFAULT, LV_DPX(4));
     lv_style_set_pattern_image(&styles->cb_bullet, LV_STATE_CHECKED, LV_SYMBOL_OK);
     lv_style_set_pattern_recolor(&styles->cb_bullet, LV_STATE_CHECKED, LV_COLOR_WHITE);
+    lv_style_set_pattern_opa(&styles->cb_bullet, LV_STATE_DEFAULT, LV_OPA_TRANSP);
+    lv_style_set_pattern_opa(&styles->cb_bullet, LV_STATE_CHECKED, LV_OPA_COVER);
+    lv_style_set_transition_prop_3(&styles->cb_bullet, LV_STATE_DEFAULT, LV_STYLE_PATTERN_OPA);
     lv_style_set_text_font(&styles->cb_bullet, LV_STATE_CHECKED, theme.font_small);
     lv_style_set_pad_left(&styles->cb_bullet, LV_STATE_DEFAULT, LV_DPX(3));
     lv_style_set_pad_right(&styles->cb_bullet, LV_STATE_DEFAULT, LV_DPX(3));