diff --git a/aom_dsp/prob.h b/aom_dsp/prob.h
index 6bdcd0b..a7fc544 100644
--- a/aom_dsp/prob.h
+++ b/aom_dsp/prob.h
@@ -148,7 +148,7 @@
 #if CONFIG_EC_ADAPT
 static INLINE void update_cdf(aom_cdf_prob *cdf, int val, int nsymbs) {
   const int rate = 4 + (cdf[nsymbs] > 31) + get_msb(nsymbs);
-  const int rate2 = 12 - rate;
+  const int rate2 = 5;
   int i, tmp;
   int diff;
 #if 1