diff --git a/vp8/decoder/idct_blk.c b/vp8/decoder/idct_blk.c
index c6a42578ad8ed7302d747d2c66ef8662e25e52f8..c98bd5bb8415f64633d6b07b1e5aa956df32efb4 100644
--- a/vp8/decoder/idct_blk.c
+++ b/vp8/decoder/idct_blk.c
@@ -12,6 +12,14 @@
 #include "idct.h"
 #include "dequantize.h"
 
+void vp8_dequant_dc_idct_add_c(short *input, short *dq, unsigned char *pred,
+                               unsigned char *dest, int pitch, int stride,
+                               int Dc);
+void vp8_dequant_idct_add_c(short *input, short *dq, unsigned char *pred,
+                            unsigned char *dest, int pitch, int stride);
+void vp8_dc_only_idct_add_c(short input_dc, unsigned char *pred_ptr,
+                            unsigned char *dst_ptr, int pitch, int stride);
+
 void vp8_dequant_dc_idct_add_y_block_c
             (short *q, short *dq, unsigned char *pre,
              unsigned char *dst, int stride, char *eobs, short *dc)