diff --git a/vp9/encoder/vp9_bitstream.c b/vp9/encoder/vp9_bitstream.c
index c5c93214378c819e59f3363dcd878e17629cc38c..34ae235edd5441d55c6c7c48a726e4d458792c3b 100644
--- a/vp9/encoder/vp9_bitstream.c
+++ b/vp9/encoder/vp9_bitstream.c
@@ -262,8 +262,8 @@ static void update_refpred_stats(VP9_COMP *cpi) {
 //
 // The branch counts table is re-populated during the actual pack stage and in
 // the decoder to facilitate backwards update of the context.
-static update_mode_probs(VP9_COMMON *cm,
-                         int mode_context[INTER_MODE_CONTEXTS][4]) {
+static void update_mode_probs(VP9_COMMON *cm,
+                              int mode_context[INTER_MODE_CONTEXTS][4]) {
   int i, j;
   int (*mv_ref_ct)[4][2];