diff --git a/libavcodec/dsputil.c b/libavcodec/dsputil.c
index 3e2237351db1c95f051c0467fa9ebc6e062a890e..f81f376cdc31ee040687ad795eb83c0f8bb559a0 100644
--- a/libavcodec/dsputil.c
+++ b/libavcodec/dsputil.c
@@ -2811,10 +2811,10 @@ void ff_avg_cavs_qpel16_mc00_c(uint8_t *dst, uint8_t *src, int stride) {
 
 #if CONFIG_VC1_DECODER
 /* VC-1 specific */
-void ff_put_vc1_mspel_mc00_c(uint8_t *dst, uint8_t *src, int stride, int rnd) {
+void ff_put_vc1_mspel_mc00_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) {
     put_pixels8_c(dst, src, stride, 8);
 }
-void ff_avg_vc1_mspel_mc00_c(uint8_t *dst, uint8_t *src, int stride, int rnd) {
+void ff_avg_vc1_mspel_mc00_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) {
     avg_pixels8_c(dst, src, stride, 8);
 }
 #endif /* CONFIG_VC1_DECODER */
diff --git a/libavcodec/dsputil.h b/libavcodec/dsputil.h
index a3ff0693e5c7066bad6fe10a33cf8efcd132c4bf..93a3a2f9ef20c31c6fb11b1b49aa96aacbb0d63d 100644
--- a/libavcodec/dsputil.h
+++ b/libavcodec/dsputil.h
@@ -96,6 +96,10 @@ void ff_vp3_h_loop_filter_c(uint8_t *src, int stride, int *bounding_values);
 void ff_vp6_filter_diag4_c(uint8_t *dst, uint8_t *src, int stride,
                            const int16_t *h_weights, const int16_t *v_weights);
 
+/* VC1 functions */
+void ff_put_vc1_mspel_mc00_c(uint8_t *dst, const uint8_t *src, int stride, int rnd);
+void ff_avg_vc1_mspel_mc00_c(uint8_t *dst, const uint8_t *src, int stride, int rnd);
+
 /* 1/2^n downscaling functions from imgconvert.c */
 void ff_img_copy_plane(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height);
 void ff_shrink22(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height);
diff --git a/libavcodec/vc1dsp.c b/libavcodec/vc1dsp.c
index 85896dbdde0a807e49f732053f4bc1e393a83db9..31c976d6c09c704a1f0dfec268d34021c8cbb9e1 100644
--- a/libavcodec/vc1dsp.c
+++ b/libavcodec/vc1dsp.c
@@ -581,10 +581,6 @@ VC1_MSPEL_MC(op_avg, avg_)
 
 /* pixel functions - really are entry points to vc1_mspel_mc */
 
-/* this one is defined in dsputil.c */
-void ff_put_vc1_mspel_mc00_c(uint8_t *dst, const uint8_t *src, int stride, int rnd);
-void ff_avg_vc1_mspel_mc00_c(uint8_t *dst, const uint8_t *src, int stride, int rnd);
-
 #define PUT_VC1_MSPEL(a, b)\
 static void put_vc1_mspel_mc ## a ## b ##_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { \
      put_vc1_mspel_mc(dst, src, stride, a, b, rnd);                         \