diff --git a/src/lib/xiph/VorbisComments.cxx b/src/lib/xiph/VorbisComments.cxx
index a8929b5e2..95a04622e 100644
--- a/src/lib/xiph/VorbisComments.cxx
+++ b/src/lib/xiph/VorbisComments.cxx
@@ -29,6 +29,8 @@
 #include "util/StringView.hxx"
 #include "config.h"
 
+#ifdef ENABLE_VORBIS_DECODER
+
 #ifndef HAVE_TREMOR
 #include <vorbis/codec.h>
 #else
@@ -63,6 +65,8 @@ VorbisCommentToReplayGain(ReplayGainInfo &rgi,
 	return found;
 }
 
+#endif /* ENABLE_VORBIS_DECODER */
+
 static void
 vorbis_scan_comment(StringView comment, TagHandler &handler) noexcept
 {