--- ./Makefile.am.orig
+++ ./Makefile.am
@@ -678,6 +678,7 @@
 	$(TWOLAME_LIBS) \
 	$(FLAC_LIBS) \
 	$(OPUS_LIBS) \
+	$(VORBIS_LIBS) \
 	$(VORBISENC_LIBS)
 
 libencoder_plugins_a_SOURCES = \