diff --git a/src/filter/Observer.cxx b/src/filter/Observer.cxx
index 5d6602d46..d7835a7ed 100644
--- a/src/filter/Observer.cxx
+++ b/src/filter/Observer.cxx
@@ -73,6 +73,10 @@ public:
 		return filter;
 	}
 
+	void Reset() override {
+		filter->Reset();
+	}
+
 	ConstBuffer<void> FilterPCM(ConstBuffer<void> src) override {
 		return filter->FilterPCM(src);
 	}