diff --git a/vp9/encoder/vp9_pickmode.c b/vp9/encoder/vp9_pickmode.c
index a4e11d6d00a46021d458e56d78a8397d2b3e9ad2..383d9275159d957fc18ebb5c9177b819047371c7 100644
--- a/vp9/encoder/vp9_pickmode.c
+++ b/vp9/encoder/vp9_pickmode.c
@@ -192,7 +192,7 @@ int64_t vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x,
                                     VP9_ALT_FLAG };
   int64_t best_rd = INT64_MAX;
   int64_t this_rd;
-  int64_t cost[4]= { 0, 50, 75, 100 };
+  static const int cost[4]= { 0, 50, 75, 100 };
 
   const int64_t inter_mode_thresh = 300;
   const int64_t intra_mode_cost = 50;