diff --git a/src/bin/options_video.c b/src/bin/options_video.c
index 64c4d518..d3b0a18f 100644
--- a/src/bin/options_video.c
+++ b/src/bin/options_video.c
@@ -86,8 +86,8 @@ options_video(Evas_Object *opbox, Evas_Object *term)
    evas_object_size_hint_weight_set(o, EVAS_HINT_EXPAND, 0.0);
    evas_object_size_hint_align_set(o, EVAS_HINT_FILL, 0.5);
    elm_slider_span_size_set(o, 40);
-   elm_slider_unit_format_set(o, "%1.0f");
-   elm_slider_indicator_format_set(o, "%1.0f");
+   elm_slider_unit_format_set(o, "%1.0f%%");
+   elm_slider_indicator_format_set(o, "%1.0f%%");
    elm_slider_min_max_set(o, 0, 100);
    elm_slider_value_set(o, config->opacity);
    elm_object_disabled_set(o, !config->translucent);