diff --git a/libavcodec/ac3enc.c b/libavcodec/ac3enc.c
index f8ec4e199e..3cb4e5f029 100644
--- a/libavcodec/ac3enc.c
+++ b/libavcodec/ac3enc.c
@@ -48,7 +48,6 @@
 #include "ac3.h"
 #include "ac3defs.h"
 #include "ac3tab.h"
-#include "fft.h"
 #include "ac3enc.h"
 #include "eac3enc.h"
 
diff --git a/libavcodec/ac3enc_fixed.c b/libavcodec/ac3enc_fixed.c
index f1f573bb72..5a5f1cc2e9 100644
--- a/libavcodec/ac3enc_fixed.c
+++ b/libavcodec/ac3enc_fixed.c
@@ -27,7 +27,6 @@
  */
 
 #define AC3ENC_FLOAT 0
-#include "internal.h"
 #include "audiodsp.h"
 #include "ac3enc.h"
 #include "codec_internal.h"
diff --git a/libavcodec/atrac3plusdsp.c b/libavcodec/atrac3plusdsp.c
index 7dd3d7a728..802f12aec5 100644
--- a/libavcodec/atrac3plusdsp.c
+++ b/libavcodec/atrac3plusdsp.c
@@ -31,9 +31,7 @@
 #include "libavutil/libm.h"
 #include "libavutil/mem_internal.h"
 
-#include "avcodec.h"
 #include "sinewin.h"
-#include "fft.h"
 #include "atrac3plus.h"
 
 /**
diff --git a/libavcodec/proresenc_anatoliy.c b/libavcodec/proresenc_anatoliy.c
index 5fa5f1fd69..bd1b70cc5d 100644
--- a/libavcodec/proresenc_anatoliy.c
+++ b/libavcodec/proresenc_anatoliy.c
@@ -31,7 +31,6 @@
 #include "libavutil/opt.h"
 #include "avcodec.h"
 #include "codec_internal.h"
-#include "dct.h"
 #include "encode.h"
 #include "internal.h"
 #include "profiles.h"
diff --git a/libavcodec/synth_filter.c b/libavcodec/synth_filter.c
index d6c4d1bf10..f90c6be7a7 100644
--- a/libavcodec/synth_filter.c
+++ b/libavcodec/synth_filter.c
@@ -19,7 +19,6 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#include "fft.h"
 #include "dcadct.h"
 #include "dcamath.h"
 #include "synth_filter.h"
diff --git a/libavcodec/twinvq.c b/libavcodec/twinvq.c
index 85eca9fc5c..4cc0583f8a 100644
--- a/libavcodec/twinvq.c
+++ b/libavcodec/twinvq.c
@@ -26,7 +26,6 @@
 #include "libavutil/float_dsp.h"
 #include "avcodec.h"
 #include "decode.h"
-#include "fft.h"
 #include "lsp.h"
 #include "metasound_twinvq_data.h"
 #include "sinewin.h"
diff --git a/libavcodec/twinvq.h b/libavcodec/twinvq.h
index 3ce096f90a..84f4e51438 100644
--- a/libavcodec/twinvq.h
+++ b/libavcodec/twinvq.h
@@ -30,7 +30,6 @@
 #include "libavutil/common.h"
 #include "libavutil/float_dsp.h"
 #include "avcodec.h"
-#include "internal.h"
 
 enum TwinVQCodec {
     TWINVQ_CODEC_VQF,