diff --git a/libavformat/Makefile b/libavformat/Makefile
index 54e8864608..976ce63a3d 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -201,7 +201,7 @@ OBJS-$(CONFIG_MMF_MUXER)                 += mmf.o
 OBJS-$(CONFIG_MOV_DEMUXER)               += mov.o isom.o mov_chan.o
 OBJS-$(CONFIG_MOV_MUXER)                 += movenc.o isom.o avc.o \
                                             movenchint.o rtpenc_chain.o \
-                                            mov_chan.o
+                                            mov_chan.o rtp.o
 OBJS-$(CONFIG_MP2_MUXER)                 += mp3enc.o rawenc.o id3v2enc.o
 OBJS-$(CONFIG_MP3_DEMUXER)               += mp3dec.o
 OBJS-$(CONFIG_MP3_MUXER)                 += mp3enc.o rawenc.o id3v2enc.o