diff --git a/src/effects/BassTreble.h b/src/effects/BassTreble.h
index a3beafb7f..b21c54cce 100644
--- a/src/effects/BassTreble.h
+++ b/src/effects/BassTreble.h
@@ -41,7 +41,7 @@ public:
 
 WX_DECLARE_OBJARRAY(EffectBassTrebleState, EffectBassTrebleStateArray);
 
-class EffectBassTreble : public Effect
+class EffectBassTreble final : public Effect
 {
 public:
    EffectBassTreble();