diff --git a/src/filter/plugins/ConvertFilterPlugin.cxx b/src/filter/plugins/ConvertFilterPlugin.cxx
index bcc70fcd5..cec95222b 100644
--- a/src/filter/plugins/ConvertFilterPlugin.cxx
+++ b/src/filter/plugins/ConvertFilterPlugin.cxx
@@ -53,7 +53,8 @@ public:
 	void Set(const AudioFormat &_out_audio_format);
 
 	void Reset() override {
-		state.Reset();
+		if (IsActive())
+			state.Reset();
 	}
 
 	ConstBuffer<void> FilterPCM(ConstBuffer<void> src) override;