diff --git a/libavformat/Makefile b/libavformat/Makefile
index 86064ea..60e056d 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -433,6 +433,7 @@ OBJS-$(CONFIG_VOBSUB_DEMUXER)            += subtitles.o # mp
 OBJS-$(CONFIG_VOC_DEMUXER)               += vocdec.o voc.o
 OBJS-$(CONFIG_VOC_MUXER)                 += vocenc.o voc.o
 OBJS-$(CONFIG_VPLAYER_DEMUXER)           += vplayerdec.o subtitles.o
+OBJS-$(CONFIG_STL_DEMUXER)              += stldec.o subtitles.o
 OBJS-$(CONFIG_VQF_DEMUXER)               += vqf.o
 OBJS-$(CONFIG_W64_DEMUXER)               += wavdec.o w64.o pcm.o
 OBJS-$(CONFIG_W64_MUXER)                 += wavenc.o w64.o
diff --git a/libavformat/allformats.c b/libavformat/allformats.c
index d54ed9b..c1a3a4e 100644
--- a/libavformat/allformats.c
+++ b/libavformat/allformats.c
@@ -258,6 +258,7 @@ void av_register_all(void)
     REGISTER_DEMUXER (SBG,              sbg);
     REGISTER_DEMUXER (SDP,              sdp);
     REGISTER_DEMUXER (SDR2,             sdr2);
+    REGISTER_DEMUXER (STL,              stl);
 #if CONFIG_RTPDEC
     ff_register_rtp_dynamic_payload_handlers();