diff --git a/libavformat/Makefile b/libavformat/Makefile
index fcb39ce133..448f21cd8e 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -81,7 +81,7 @@ OBJS-$(CONFIG_ADX_DEMUXER)               += adxdec.o
 OBJS-$(CONFIG_ADX_MUXER)                 += rawenc.o
 OBJS-$(CONFIG_AEA_DEMUXER)               += aea.o pcm.o
 OBJS-$(CONFIG_AFC_DEMUXER)               += afc.o
-OBJS-$(CONFIG_AIFF_DEMUXER)              += aiffdec.o pcm.o isom.o \
+OBJS-$(CONFIG_AIFF_DEMUXER)              += aiffdec.o pcm.o \
                                             mov_chan.o replaygain.o
 OBJS-$(CONFIG_AIFF_MUXER)                += aiffenc.o id3v2enc.o
 OBJS-$(CONFIG_AIX_DEMUXER)               += aixdec.o
diff --git a/libavformat/aiffdec.c b/libavformat/aiffdec.c
index 4d1c9bbb53..81189316ff 100644
--- a/libavformat/aiffdec.c
+++ b/libavformat/aiffdec.c
@@ -20,13 +20,11 @@
  */
 
 #include "libavutil/intreadwrite.h"
-#include "libavutil/mathematics.h"
 #include "libavutil/dict.h"
 #include "avformat.h"
 #include "internal.h"
 #include "pcm.h"
 #include "aiff.h"
-#include "isom.h"
 #include "id3v2.h"
 #include "mov_chan.h"
 #include "replaygain.h"