diff --git a/NEWS b/NEWS
index da0031e68..b146b50cc 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,5 @@
 ver 0.20.1 (not yet released)
+* fix crash with volume_normalization enabled
 
 ver 0.20 (2017/01/04)
 * protocol
diff --git a/src/filter/plugins/AutoConvertFilterPlugin.cxx b/src/filter/plugins/AutoConvertFilterPlugin.cxx
index f661c1093..7da31a00b 100644
--- a/src/filter/plugins/AutoConvertFilterPlugin.cxx
+++ b/src/filter/plugins/AutoConvertFilterPlugin.cxx
@@ -45,7 +45,8 @@ class AutoConvertFilter final : public Filter {
 public:
 	AutoConvertFilter(std::unique_ptr<Filter> &&_filter,
 			  std::unique_ptr<Filter> &&_convert)
-		:filter(std::move(_filter)), convert(std::move(_convert)) {}
+		:Filter(_filter->GetOutAudioFormat()),
+		 filter(std::move(_filter)), convert(std::move(_convert)) {}
 
 	ConstBuffer<void> FilterPCM(ConstBuffer<void> src) override;
 };