diff --git a/libavcodec/h263dec.c b/libavcodec/h263dec.c
index d14e232640..a210772698 100644
--- a/libavcodec/h263dec.c
+++ b/libavcodec/h263dec.c
@@ -42,6 +42,7 @@
 #include "qpeldsp.h"
 #include "vdpau_compat.h"
 #include "thread.h"
+#include "wmv2.h"
 
 static enum AVPixelFormat h263_get_format(AVCodecContext *avctx)
 {
diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c
index fb8570cc9c..4b3e939a70 100644
--- a/libavcodec/mpegvideo.c
+++ b/libavcodec/mpegvideo.c
@@ -45,6 +45,7 @@
 #include "msmpeg4.h"
 #include "qpeldsp.h"
 #include "thread.h"
+#include "wmv2.h"
 #include <limits.h>
 
 static const uint8_t ff_default_chroma_qscale_table[32] = {
diff --git a/libavcodec/mpegvideo.h b/libavcodec/mpegvideo.h
index a4370bab83..44e60ad36d 100644
--- a/libavcodec/mpegvideo.h
+++ b/libavcodec/mpegvideo.h
@@ -891,17 +891,6 @@ int ff_msmpeg4_decode_picture_header(MpegEncContext * s);
 int ff_msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
 int ff_msmpeg4_decode_init(AVCodecContext *avctx);
 int ff_msmpeg4_encode_init(MpegEncContext *s);
-int ff_wmv2_decode_picture_header(MpegEncContext * s);
-int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
-void ff_wmv2_add_mb(MpegEncContext *s, int16_t block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
-void ff_mspel_motion(MpegEncContext *s,
-                               uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
-                               uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
-                               int motion_x, int motion_y, int h);
-int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
-void ff_wmv2_encode_mb(MpegEncContext * s,
-                       int16_t block[6][64],
-                       int motion_x, int motion_y);
 
 int ff_mpeg_ref_picture(AVCodecContext *avctx, Picture *dst, Picture *src);
 void ff_mpeg_unref_picture(AVCodecContext *avctx, Picture *picture);
diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
index 2833c55bbb..d608a6e090 100644
--- a/libavcodec/mpegvideo_enc.c
+++ b/libavcodec/mpegvideo_enc.c
@@ -56,6 +56,7 @@
 #include "mpeg4video.h"
 #include "internal.h"
 #include "bytestream.h"
+#include "wmv2.h"
 #include <limits.h>
 #include "sp5x.h"
 
diff --git a/libavcodec/mpegvideo_motion.c b/libavcodec/mpegvideo_motion.c
index 0d75ffa9ce..060f3f25b1 100644
--- a/libavcodec/mpegvideo_motion.c
+++ b/libavcodec/mpegvideo_motion.c
@@ -32,6 +32,7 @@
 #include "mjpegenc.h"
 #include "msmpeg4.h"
 #include "qpeldsp.h"
+#include "wmv2.h"
 #include <limits.h>
 
 static void gmc1_motion(MpegEncContext *s,
diff --git a/libavcodec/msmpeg4.h b/libavcodec/msmpeg4.h
index db77ce1d73..ac07762002 100644
--- a/libavcodec/msmpeg4.h
+++ b/libavcodec/msmpeg4.h
@@ -54,7 +54,6 @@ int ff_msmpeg4_decode_block(MpegEncContext * s, int16_t * block,
                             int n, int coded, const uint8_t *scan_table);
 int ff_msmpeg4_pred_dc(MpegEncContext *s, int n,
                        int16_t **dc_val_ptr, int *dir_ptr);
-int ff_wmv2_decode_mb(MpegEncContext *s, int16_t block[6][64]);
 
 #define CONFIG_MSMPEG4_DECODER (CONFIG_MSMPEG4V1_DECODER || \
                                 CONFIG_MSMPEG4V2_DECODER || \
diff --git a/libavcodec/msmpeg4dec.c b/libavcodec/msmpeg4dec.c
index cd88ec0f6a..2feb2beb21 100644
--- a/libavcodec/msmpeg4dec.c
+++ b/libavcodec/msmpeg4dec.c
@@ -33,6 +33,7 @@
 #include "mpeg4video.h"
 #include "msmpeg4data.h"
 #include "vc1data.h"
+#include "wmv2.h"
 
 #define DC_VLC_BITS 9
 #define V2_INTRA_CBPC_VLC_BITS 3
diff --git a/libavcodec/wmv2.h b/libavcodec/wmv2.h
index 4fa5e9bcec..31593b8c38 100644
--- a/libavcodec/wmv2.h
+++ b/libavcodec/wmv2.h
@@ -56,6 +56,21 @@ typedef struct Wmv2Context {
 
 void ff_wmv2_common_init(Wmv2Context *w);
 
+int ff_wmv2_decode_mb(MpegEncContext *s, int16_t block[6][64]);
+int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
+void ff_wmv2_encode_mb(MpegEncContext * s, int16_t block[6][64],
+                       int motion_x, int motion_y);
+int ff_wmv2_decode_picture_header(MpegEncContext * s);
+int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
+void ff_wmv2_add_mb(MpegEncContext *s, int16_t block[6][64],
+                    uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
+
+void ff_mspel_motion(MpegEncContext *s,
+                     uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
+                     uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
+                     int motion_x, int motion_y, int h);
+
+
 static av_always_inline int wmv2_get_cbp_table_index(MpegEncContext *s, int cbp_index)
 {
     static const uint8_t map[3][3] = {