diff --git a/apps/plugins/doom/rockdoom.c b/apps/plugins/doom/rockdoom.c
index 0220b984d8..d22a946d90 100644
--- a/apps/plugins/doom/rockdoom.c
+++ b/apps/plugins/doom/rockdoom.c
@@ -714,7 +714,10 @@ enum plugin_status plugin_start(const void* parameter)
 
    rb->lcd_clear_display();
 
-   systemvol= rb->global_settings->volume-rb->global_settings->volume%((rb->sound_max(SOUND_VOLUME)-rb->sound_min(SOUND_VOLUME))/15);
+   int mod = (rb->sound_max(SOUND_VOLUME)-rb->sound_min(SOUND_VOLUME))/15;
+   if(mod == 0)
+       mod = rb->global_settings->volume;
+   systemvol= rb->global_settings->volume-rb->global_settings->volume;
    general_translucency = default_translucency;                    // phares
 
    backlight_force_on();